./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/14_spin2003.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-ext/14_spin2003.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 f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e --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 [2023-08-28 17:54:39,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 17:54:39,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 17:54:39,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 17:54:39,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 17:54:39,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 17:54:39,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 17:54:39,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 17:54:39,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 17:54:39,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 17:54:39,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 17:54:39,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 17:54:39,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 17:54:39,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 17:54:39,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 17:54:39,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 17:54:39,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 17:54:39,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 17:54:39,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 17:54:39,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 17:54:39,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 17:54:39,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 17:54:39,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 17:54:39,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 17:54:39,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 17:54:39,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 17:54:39,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 17:54:39,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 17:54:39,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 17:54:39,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 17:54:39,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 17:54:39,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 17:54:39,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 17:54:39,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 17:54:39,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 17:54:39,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 17:54:39,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 17:54:39,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 17:54:39,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 17:54:39,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 17:54:39,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 17:54:39,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 17:54:39,394 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 17:54:39,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 17:54:39,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 17:54:39,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 17:54:39,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 17:54:39,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 17:54:39,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 17:54:39,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 17:54:39,397 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 17:54:39,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 17:54:39,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 17:54:39,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 17:54:39,399 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 17:54:39,399 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 17:54:39,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 17:54:39,399 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 17:54:39,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 17:54:39,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 17:54:39,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 17:54:39,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 17:54:39,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:54:39,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 17:54:39,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 17:54:39,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 17:54:39,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 17:54:39,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 17:54:39,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 17:54:39,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 17:54:39,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 17:54:39,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 17:54:39,401 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 17:54:39,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 17:54:39,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 17:54:39,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 17:54:39,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 17:54:39,665 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 17:54:39,665 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 17:54:39,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i [2023-08-28 17:54:40,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 17:54:40,819 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 17:54:40,819 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i [2023-08-28 17:54:40,836 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46036e3c2/c1b6153611514e05b052d46f968f79ff/FLAG7066833b0 [2023-08-28 17:54:40,846 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46036e3c2/c1b6153611514e05b052d46f968f79ff [2023-08-28 17:54:40,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 17:54:40,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 17:54:40,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 17:54:40,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 17:54:40,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 17:54:40,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:54:40" (1/1) ... [2023-08-28 17:54:40,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2497b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:40, skipping insertion in model container [2023-08-28 17:54:40,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:54:40" (1/1) ... [2023-08-28 17:54:40,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 17:54:40,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 17:54:41,101 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-ext/14_spin2003.i[30203,30216] [2023-08-28 17:54:41,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:54:41,112 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 17:54:41,148 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-ext/14_spin2003.i[30203,30216] [2023-08-28 17:54:41,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:54:41,190 INFO L208 MainTranslator]: Completed translation [2023-08-28 17:54:41,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41 WrapperNode [2023-08-28 17:54:41,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 17:54:41,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 17:54:41,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 17:54:41,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 17:54:41,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,232 INFO L138 Inliner]: procedures = 169, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2023-08-28 17:54:41,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 17:54:41,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 17:54:41,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 17:54:41,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 17:54:41,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 17:54:41,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 17:54:41,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 17:54:41,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 17:54:41,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (1/1) ... [2023-08-28 17:54:41,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:54:41,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:41,283 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) [2023-08-28 17:54:41,292 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 [2023-08-28 17:54:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 17:54:41,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 17:54:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 17:54:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 17:54:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 17:54:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 17:54:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 17:54:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 17:54:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 17:54:41,313 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 17:54:41,439 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 17:54:41,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 17:54:41,550 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 17:54:41,586 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 17:54:41,586 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-28 17:54:41,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:54:41 BoogieIcfgContainer [2023-08-28 17:54:41,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 17:54:41,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 17:54:41,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 17:54:41,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 17:54:41,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:54:40" (1/3) ... [2023-08-28 17:54:41,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfd3fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:54:41, skipping insertion in model container [2023-08-28 17:54:41,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:41" (2/3) ... [2023-08-28 17:54:41,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfd3fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:54:41, skipping insertion in model container [2023-08-28 17:54:41,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:54:41" (3/3) ... [2023-08-28 17:54:41,593 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2023-08-28 17:54:41,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 17:54:41,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 17:54:41,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-28 17:54:41,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 17:54:41,627 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:54:41,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:41,678 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2023-08-28 17:54:41,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:41,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2023-08-28 17:54:41,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:41,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:41,686 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:41,691 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:41,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:41,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:41,703 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2023-08-28 17:54:41,703 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:41,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2023-08-28 17:54:41,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-28 17:54:42,714 INFO L134 LiptonReduction]: Checked pairs total: 750 [2023-08-28 17:54:42,714 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-28 17:54:42,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:54:42,732 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:42,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-28 17:54:42,738 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-28 17:54:42,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:42,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:42,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:54:42,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-28 17:54:42,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash 9281721, now seen corresponding path program 1 times [2023-08-28 17:54:42,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:42,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289606721] [2023-08-28 17:54:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:42,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:42,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289606721] [2023-08-28 17:54:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289606721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:42,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:54:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269071076] [2023-08-28 17:54:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:42,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:54:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:54:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:54:42,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 113 [2023-08-28 17:54:42,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:42,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:42,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 113 [2023-08-28 17:54:42,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:42,883 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-28 17:54:42,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:42,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-28 17:54:42,885 INFO L137 encePairwiseOnDemand]: 105/113 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-28 17:54:42,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-28 17:54:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:54:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:54:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2023-08-28 17:54:42,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43805309734513276 [2023-08-28 17:54:42,894 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 99 transitions. [2023-08-28 17:54:42,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 99 transitions. [2023-08-28 17:54:42,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:42,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 99 transitions. [2023-08-28 17:54:42,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:42,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:42,903 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:42,904 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 33 flow. Second operand 2 states and 99 transitions. [2023-08-28 17:54:42,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-28 17:54:42,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:42,906 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-28 17:54:42,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-28 17:54:42,910 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -7 predicate places. [2023-08-28 17:54:42,910 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-28 17:54:42,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:42,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 14 remaining) [2023-08-28 17:54:42,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-08-28 17:54:42,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-08-28 17:54:42,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-08-28 17:54:42,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-08-28 17:54:42,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-08-28 17:54:42,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-08-28 17:54:42,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-08-28 17:54:42,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-08-28 17:54:42,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-08-28 17:54:42,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-08-28 17:54:42,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-08-28 17:54:42,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-08-28 17:54:42,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-08-28 17:54:42,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 17:54:42,923 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:54:42,927 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 17:54:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:42,947 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2023-08-28 17:54:42,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2023-08-28 17:54:42,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:42,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:42,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:42,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:42,950 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:42,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 113 flow [2023-08-28 17:54:42,959 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2023-08-28 17:54:42,959 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:42,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2023-08-28 17:54:42,960 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-28 17:54:43,844 INFO L134 LiptonReduction]: Checked pairs total: 708 [2023-08-28 17:54:43,845 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-28 17:54:43,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:54:43,847 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:43,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:54:43,849 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-28 17:54:43,849 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:43,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:43,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 17:54:43,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:54:43,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2073475606, now seen corresponding path program 1 times [2023-08-28 17:54:43,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:43,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092273013] [2023-08-28 17:54:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:43,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:43,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:54:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:43,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:54:43,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:54:43,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:54:43,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 17:54:43,895 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:54:43,895 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:54:43,896 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:54:43,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 17:54:43,913 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:54:43,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:43,930 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2023-08-28 17:54:43,930 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:43,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2023-08-28 17:54:43,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:43,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:43,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:43,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:43,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:43,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:43,939 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2023-08-28 17:54:43,939 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2023-08-28 17:54:43,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-08-28 17:54:44,566 INFO L134 LiptonReduction]: Checked pairs total: 8646 [2023-08-28 17:54:44,566 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-28 17:54:44,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:54:44,568 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:44,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-28 17:54:44,569 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 17:54:44,569 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:54:44,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:44,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash 16242854, now seen corresponding path program 1 times [2023-08-28 17:54:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:44,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56231468] [2023-08-28 17:54:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:44,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56231468] [2023-08-28 17:54:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56231468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:44,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:54:44,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946350567] [2023-08-28 17:54:44,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:44,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:54:44,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:54:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:54:44,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 129 [2023-08-28 17:54:44,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:44,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 129 [2023-08-28 17:54:44,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:44,650 INFO L130 PetriNetUnfolder]: 132/397 cut-off events. [2023-08-28 17:54:44,650 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-28 17:54:44,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 397 events. 132/397 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2236 event pairs, 132 based on Foata normal form. 14/380 useless extension candidates. Maximal degree in co-relation 87. Up to 247 conditions per place. [2023-08-28 17:54:44,652 INFO L137 encePairwiseOnDemand]: 118/129 looper letters, 16 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-28 17:54:44,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 114 flow [2023-08-28 17:54:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:54:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:54:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 153 transitions. [2023-08-28 17:54:44,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930232558139535 [2023-08-28 17:54:44,654 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 153 transitions. [2023-08-28 17:54:44,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 153 transitions. [2023-08-28 17:54:44,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:44,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 153 transitions. [2023-08-28 17:54:44,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,656 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,656 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 104 flow. Second operand 2 states and 153 transitions. [2023-08-28 17:54:44,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 114 flow [2023-08-28 17:54:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 112 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:44,658 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 80 flow [2023-08-28 17:54:44,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-28 17:54:44,658 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-08-28 17:54:44,659 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 80 flow [2023-08-28 17:54:44,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 17:54:44,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:44,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1439960191, now seen corresponding path program 1 times [2023-08-28 17:54:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:44,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567962587] [2023-08-28 17:54:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:44,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:44,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567962587] [2023-08-28 17:54:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567962587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:44,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:44,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:44,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361471046] [2023-08-28 17:54:44,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:44,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:44,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:44,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2023-08-28 17:54:44,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:44,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2023-08-28 17:54:44,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:44,810 INFO L130 PetriNetUnfolder]: 257/578 cut-off events. [2023-08-28 17:54:44,810 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-28 17:54:44,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 578 events. 257/578 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3324 event pairs, 211 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 1074. Up to 418 conditions per place. [2023-08-28 17:54:44,813 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 28 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2023-08-28 17:54:44,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 175 flow [2023-08-28 17:54:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-08-28 17:54:44,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49870801033591733 [2023-08-28 17:54:44,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-08-28 17:54:44,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-08-28 17:54:44,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:44,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-08-28 17:54:44,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,822 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 80 flow. Second operand 3 states and 193 transitions. [2023-08-28 17:54:44,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 175 flow [2023-08-28 17:54:44,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:44,824 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 113 flow [2023-08-28 17:54:44,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-28 17:54:44,826 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-08-28 17:54:44,826 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 113 flow [2023-08-28 17:54:44,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 17:54:44,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:44,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:44,830 INFO L85 PathProgramCache]: Analyzing trace with hash 280775271, now seen corresponding path program 1 times [2023-08-28 17:54:44,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026460562] [2023-08-28 17:54:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:44,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026460562] [2023-08-28 17:54:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026460562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:44,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053480591] [2023-08-28 17:54:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:44,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2023-08-28 17:54:44,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:44,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2023-08-28 17:54:44,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:44,957 INFO L130 PetriNetUnfolder]: 329/711 cut-off events. [2023-08-28 17:54:44,957 INFO L131 PetriNetUnfolder]: For 111/117 co-relation queries the response was YES. [2023-08-28 17:54:44,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 711 events. 329/711 cut-off events. For 111/117 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4067 event pairs, 219 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 1495. Up to 480 conditions per place. [2023-08-28 17:54:44,973 INFO L137 encePairwiseOnDemand]: 122/129 looper letters, 33 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-08-28 17:54:44,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 228 flow [2023-08-28 17:54:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2023-08-28 17:54:44,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2023-08-28 17:54:44,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2023-08-28 17:54:44,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2023-08-28 17:54:44,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:44,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2023-08-28 17:54:44,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,980 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 113 flow. Second operand 3 states and 195 transitions. [2023-08-28 17:54:44,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 228 flow [2023-08-28 17:54:44,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:44,983 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 160 flow [2023-08-28 17:54:44,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-28 17:54:44,983 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-08-28 17:54:44,983 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 160 flow [2023-08-28 17:54:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:44,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 17:54:44,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:44,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash 318883182, now seen corresponding path program 1 times [2023-08-28 17:54:44,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999554231] [2023-08-28 17:54:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:45,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:45,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999554231] [2023-08-28 17:54:45,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999554231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:45,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:45,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:45,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69250493] [2023-08-28 17:54:45,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:45,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:45,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:45,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:45,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2023-08-28 17:54:45,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2023-08-28 17:54:45,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:45,097 INFO L130 PetriNetUnfolder]: 308/682 cut-off events. [2023-08-28 17:54:45,097 INFO L131 PetriNetUnfolder]: For 290/310 co-relation queries the response was YES. [2023-08-28 17:54:45,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 682 events. 308/682 cut-off events. For 290/310 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3975 event pairs, 217 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 1636. Up to 506 conditions per place. [2023-08-28 17:54:45,100 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 31 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-28 17:54:45,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 272 flow [2023-08-28 17:54:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2023-08-28 17:54:45,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909560723514212 [2023-08-28 17:54:45,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2023-08-28 17:54:45,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2023-08-28 17:54:45,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:45,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2023-08-28 17:54:45,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,104 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 160 flow. Second operand 3 states and 190 transitions. [2023-08-28 17:54:45,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 272 flow [2023-08-28 17:54:45,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 250 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-28 17:54:45,106 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 196 flow [2023-08-28 17:54:45,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-08-28 17:54:45,107 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2023-08-28 17:54:45,107 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 196 flow [2023-08-28 17:54:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:45,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:45,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 17:54:45,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:45,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash -757887968, now seen corresponding path program 1 times [2023-08-28 17:54:45,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:45,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869557660] [2023-08-28 17:54:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:45,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:45,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869557660] [2023-08-28 17:54:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869557660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:45,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:45,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:45,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883043498] [2023-08-28 17:54:45,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:45,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:45,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:45,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:45,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2023-08-28 17:54:45,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2023-08-28 17:54:45,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:45,240 INFO L130 PetriNetUnfolder]: 441/917 cut-off events. [2023-08-28 17:54:45,241 INFO L131 PetriNetUnfolder]: For 561/599 co-relation queries the response was YES. [2023-08-28 17:54:45,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 917 events. 441/917 cut-off events. For 561/599 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5473 event pairs, 181 based on Foata normal form. 4/872 useless extension candidates. Maximal degree in co-relation 2327. Up to 440 conditions per place. [2023-08-28 17:54:45,244 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 41 selfloop transitions, 12 changer transitions 7/72 dead transitions. [2023-08-28 17:54:45,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 407 flow [2023-08-28 17:54:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-28 17:54:45,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297157622739018 [2023-08-28 17:54:45,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-28 17:54:45,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-28 17:54:45,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:45,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-28 17:54:45,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,248 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 196 flow. Second operand 3 states and 205 transitions. [2023-08-28 17:54:45,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 407 flow [2023-08-28 17:54:45,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:45,251 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 280 flow [2023-08-28 17:54:45,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-08-28 17:54:45,252 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-28 17:54:45,253 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 280 flow [2023-08-28 17:54:45,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:45,253 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:45,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 17:54:45,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:45,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash -167009612, now seen corresponding path program 1 times [2023-08-28 17:54:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:45,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240471378] [2023-08-28 17:54:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:45,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:45,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:45,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240471378] [2023-08-28 17:54:45,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240471378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:45,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:54:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397878334] [2023-08-28 17:54:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:45,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:45,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 129 [2023-08-28 17:54:45,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 129 [2023-08-28 17:54:45,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:45,339 INFO L130 PetriNetUnfolder]: 37/163 cut-off events. [2023-08-28 17:54:45,340 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-08-28 17:54:45,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 163 events. 37/163 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 625 event pairs, 5 based on Foata normal form. 20/180 useless extension candidates. Maximal degree in co-relation 423. Up to 80 conditions per place. [2023-08-28 17:54:45,340 INFO L137 encePairwiseOnDemand]: 125/129 looper letters, 13 selfloop transitions, 3 changer transitions 6/34 dead transitions. [2023-08-28 17:54:45,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 189 flow [2023-08-28 17:54:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2023-08-28 17:54:45,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322997416020672 [2023-08-28 17:54:45,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2023-08-28 17:54:45,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2023-08-28 17:54:45,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:45,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2023-08-28 17:54:45,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,344 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 280 flow. Second operand 3 states and 206 transitions. [2023-08-28 17:54:45,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 189 flow [2023-08-28 17:54:45,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 131 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-08-28 17:54:45,346 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 76 flow [2023-08-28 17:54:45,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-08-28 17:54:45,347 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2023-08-28 17:54:45,347 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 76 flow [2023-08-28 17:54:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:45,347 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:45,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 17:54:45,347 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 17:54:45,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash -616181863, now seen corresponding path program 1 times [2023-08-28 17:54:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830628534] [2023-08-28 17:54:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830628534] [2023-08-28 17:54:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830628534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79084526] [2023-08-28 17:54:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:45,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2023-08-28 17:54:45,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2023-08-28 17:54:45,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:45,415 INFO L130 PetriNetUnfolder]: 33/121 cut-off events. [2023-08-28 17:54:45,415 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-28 17:54:45,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 121 events. 33/121 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 453 event pairs, 31 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 266. Up to 86 conditions per place. [2023-08-28 17:54:45,416 INFO L137 encePairwiseOnDemand]: 127/129 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-28 17:54:45,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 114 flow [2023-08-28 17:54:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-08-28 17:54:45,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2023-08-28 17:54:45,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-08-28 17:54:45,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-08-28 17:54:45,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:45,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-08-28 17:54:45,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,419 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 76 flow. Second operand 3 states and 178 transitions. [2023-08-28 17:54:45,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 114 flow [2023-08-28 17:54:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:45,419 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-28 17:54:45,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-28 17:54:45,421 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -14 predicate places. [2023-08-28 17:54:45,421 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-28 17:54:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:45,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-28 17:54:45,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-28 17:54:45,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-28 17:54:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-28 17:54:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-28 17:54:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-28 17:54:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-28 17:54:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-28 17:54:45,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-28 17:54:45,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 17:54:45,424 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:45,425 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 (1/2) [2023-08-28 17:54:45,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:45,436 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2023-08-28 17:54:45,436 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:45,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2023-08-28 17:54:45,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:45,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:45,437 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:45,437 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:45,437 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:45,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 178 flow [2023-08-28 17:54:45,444 INFO L130 PetriNetUnfolder]: 5/105 cut-off events. [2023-08-28 17:54:45,444 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:45,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2023-08-28 17:54:45,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-08-28 17:54:46,038 INFO L134 LiptonReduction]: Checked pairs total: 8772 [2023-08-28 17:54:46,038 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-28 17:54:46,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:54:46,039 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:46,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:54:46,041 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-28 17:54:46,041 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:46,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:46,041 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-28 17:54:46,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:54:46,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1756366200, now seen corresponding path program 1 times [2023-08-28 17:54:46,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:46,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245381595] [2023-08-28 17:54:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:46,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:46,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:54:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:46,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:54:46,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:54:46,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:54:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 17:54:46,055 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:54:46,055 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:54:46,055 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:54:46,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-28 17:54:46,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:54:46,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:46,075 INFO L130 PetriNetUnfolder]: 7/146 cut-off events. [2023-08-28 17:54:46,075 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:54:46,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 146 events. 7/146 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-28 17:54:46,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:46,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:46,077 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:46,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:46,077 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:46,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:46,084 INFO L130 PetriNetUnfolder]: 7/146 cut-off events. [2023-08-28 17:54:46,085 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:54:46,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 146 events. 7/146 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-28 17:54:46,088 INFO L119 LiptonReduction]: Number of co-enabled transitions 7056 [2023-08-28 17:54:46,844 INFO L134 LiptonReduction]: Checked pairs total: 26617 [2023-08-28 17:54:46,844 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-28 17:54:46,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:54:46,845 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:46,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-28 17:54:46,846 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 17:54:46,846 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:46,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:46,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:54:46,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:46,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash 23840261, now seen corresponding path program 1 times [2023-08-28 17:54:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900612254] [2023-08-28 17:54:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:46,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:46,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:46,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900612254] [2023-08-28 17:54:46,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900612254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:46,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:46,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:54:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339950254] [2023-08-28 17:54:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:46,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:54:46,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:54:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:54:46,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 173 [2023-08-28 17:54:46,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 151 flow. Second operand has 2 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:46,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:46,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 173 [2023-08-28 17:54:46,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:47,050 INFO L130 PetriNetUnfolder]: 1819/3817 cut-off events. [2023-08-28 17:54:47,050 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-08-28 17:54:47,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6842 conditions, 3817 events. 1819/3817 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29381 event pairs, 1819 based on Foata normal form. 0/3443 useless extension candidates. Maximal degree in co-relation 753. Up to 2718 conditions per place. [2023-08-28 17:54:47,065 INFO L137 encePairwiseOnDemand]: 158/173 looper letters, 24 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-08-28 17:54:47,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 169 flow [2023-08-28 17:54:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:54:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:54:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2023-08-28 17:54:47,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5924855491329479 [2023-08-28 17:54:47,066 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 205 transitions. [2023-08-28 17:54:47,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 205 transitions. [2023-08-28 17:54:47,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:47,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 205 transitions. [2023-08-28 17:54:47,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,067 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,067 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 151 flow. Second operand 2 states and 205 transitions. [2023-08-28 17:54:47,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 169 flow [2023-08-28 17:54:47,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 163 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:47,093 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 115 flow [2023-08-28 17:54:47,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=115, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-08-28 17:54:47,094 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-28 17:54:47,094 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 115 flow [2023-08-28 17:54:47,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:47,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:47,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 17:54:47,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:47,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:47,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1556344898, now seen corresponding path program 1 times [2023-08-28 17:54:47,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:47,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836637791] [2023-08-28 17:54:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:47,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:47,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:47,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836637791] [2023-08-28 17:54:47,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836637791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:47,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:47,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:47,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089018181] [2023-08-28 17:54:47,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:47,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:47,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:47,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-28 17:54:47,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:47,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-28 17:54:47,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:47,556 INFO L130 PetriNetUnfolder]: 4611/8096 cut-off events. [2023-08-28 17:54:47,557 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2023-08-28 17:54:47,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15204 conditions, 8096 events. 4611/8096 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 60322 event pairs, 3937 based on Foata normal form. 0/7265 useless extension candidates. Maximal degree in co-relation 15198. Up to 6234 conditions per place. [2023-08-28 17:54:47,588 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 44 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-28 17:54:47,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 271 flow [2023-08-28 17:54:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-28 17:54:47,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067437379576107 [2023-08-28 17:54:47,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-28 17:54:47,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-28 17:54:47,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:47,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-28 17:54:47,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,590 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 115 flow. Second operand 3 states and 263 transitions. [2023-08-28 17:54:47,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 271 flow [2023-08-28 17:54:47,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 271 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:47,592 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 169 flow [2023-08-28 17:54:47,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-28 17:54:47,592 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-08-28 17:54:47,592 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 169 flow [2023-08-28 17:54:47,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:47,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:47,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 17:54:47,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:47,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash 902246280, now seen corresponding path program 1 times [2023-08-28 17:54:47,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:47,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297604340] [2023-08-28 17:54:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:47,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297604340] [2023-08-28 17:54:47,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297604340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:47,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:47,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:47,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314639742] [2023-08-28 17:54:47,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:47,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:47,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:47,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-28 17:54:47,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:47,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:47,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-28 17:54:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:48,215 INFO L130 PetriNetUnfolder]: 6001/10309 cut-off events. [2023-08-28 17:54:48,216 INFO L131 PetriNetUnfolder]: For 2110/2286 co-relation queries the response was YES. [2023-08-28 17:54:48,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22204 conditions, 10309 events. 6001/10309 cut-off events. For 2110/2286 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 77907 event pairs, 4363 based on Foata normal form. 0/9301 useless extension candidates. Maximal degree in co-relation 22196. Up to 7522 conditions per place. [2023-08-28 17:54:48,253 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 52 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2023-08-28 17:54:48,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 357 flow [2023-08-28 17:54:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-28 17:54:48,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-08-28 17:54:48,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-28 17:54:48,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-28 17:54:48,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:48,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-28 17:54:48,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,256 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 169 flow. Second operand 3 states and 265 transitions. [2023-08-28 17:54:48,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 357 flow [2023-08-28 17:54:48,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:48,258 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 243 flow [2023-08-28 17:54:48,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-28 17:54:48,259 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-28 17:54:48,259 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 243 flow [2023-08-28 17:54:48,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:48,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:48,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 17:54:48,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:48,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1439156876, now seen corresponding path program 1 times [2023-08-28 17:54:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089551137] [2023-08-28 17:54:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:48,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:48,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:48,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089551137] [2023-08-28 17:54:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089551137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:48,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162313216] [2023-08-28 17:54:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:48,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:48,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-28 17:54:48,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:48,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-28 17:54:48,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:48,897 INFO L130 PetriNetUnfolder]: 6302/10963 cut-off events. [2023-08-28 17:54:48,897 INFO L131 PetriNetUnfolder]: For 6258/6780 co-relation queries the response was YES. [2023-08-28 17:54:48,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26835 conditions, 10963 events. 6302/10963 cut-off events. For 6258/6780 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 85348 event pairs, 4554 based on Foata normal form. 26/9735 useless extension candidates. Maximal degree in co-relation 26826. Up to 8411 conditions per place. [2023-08-28 17:54:48,941 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 55 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2023-08-28 17:54:48,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 89 transitions, 478 flow [2023-08-28 17:54:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-28 17:54:48,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048169556840078 [2023-08-28 17:54:48,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-28 17:54:48,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-28 17:54:48,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:48,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-28 17:54:48,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,945 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 243 flow. Second operand 3 states and 262 transitions. [2023-08-28 17:54:48,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 89 transitions, 478 flow [2023-08-28 17:54:48,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 89 transitions, 432 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-28 17:54:48,966 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 327 flow [2023-08-28 17:54:48,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2023-08-28 17:54:48,967 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-28 17:54:48,967 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 327 flow [2023-08-28 17:54:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:48,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:48,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:48,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 17:54:48,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:48,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash -524694974, now seen corresponding path program 1 times [2023-08-28 17:54:48,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:48,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16158933] [2023-08-28 17:54:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:48,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16158933] [2023-08-28 17:54:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16158933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628489384] [2023-08-28 17:54:48,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:49,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 173 [2023-08-28 17:54:49,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:49,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:49,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 173 [2023-08-28 17:54:49,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:49,976 INFO L130 PetriNetUnfolder]: 12532/20442 cut-off events. [2023-08-28 17:54:49,976 INFO L131 PetriNetUnfolder]: For 18375/19725 co-relation queries the response was YES. [2023-08-28 17:54:50,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54017 conditions, 20442 events. 12532/20442 cut-off events. For 18375/19725 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 159892 event pairs, 4633 based on Foata normal form. 132/18945 useless extension candidates. Maximal degree in co-relation 54007. Up to 9536 conditions per place. [2023-08-28 17:54:50,167 INFO L137 encePairwiseOnDemand]: 158/173 looper letters, 81 selfloop transitions, 33 changer transitions 0/129 dead transitions. [2023-08-28 17:54:50,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 129 transitions, 806 flow [2023-08-28 17:54:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2023-08-28 17:54:50,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279383429672447 [2023-08-28 17:54:50,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2023-08-28 17:54:50,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2023-08-28 17:54:50,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:50,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2023-08-28 17:54:50,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,170 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 327 flow. Second operand 3 states and 274 transitions. [2023-08-28 17:54:50,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 129 transitions, 806 flow [2023-08-28 17:54:50,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 129 transitions, 781 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:50,175 INFO L231 Difference]: Finished difference. Result has 68 places, 108 transitions, 695 flow [2023-08-28 17:54:50,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=695, PETRI_PLACES=68, PETRI_TRANSITIONS=108} [2023-08-28 17:54:50,177 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-28 17:54:50,177 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 108 transitions, 695 flow [2023-08-28 17:54:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:50,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:50,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 17:54:50,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:50,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash -979459441, now seen corresponding path program 1 times [2023-08-28 17:54:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:50,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232058993] [2023-08-28 17:54:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:50,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232058993] [2023-08-28 17:54:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232058993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:54:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012483891] [2023-08-28 17:54:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:50,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:50,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:50,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-08-28 17:54:50,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 108 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:50,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-08-28 17:54:50,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:50,286 INFO L130 PetriNetUnfolder]: 141/557 cut-off events. [2023-08-28 17:54:50,286 INFO L131 PetriNetUnfolder]: For 779/779 co-relation queries the response was YES. [2023-08-28 17:54:50,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 557 events. 141/557 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3199 event pairs, 17 based on Foata normal form. 148/676 useless extension candidates. Maximal degree in co-relation 1477. Up to 292 conditions per place. [2023-08-28 17:54:50,287 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 21 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-08-28 17:54:50,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 287 flow [2023-08-28 17:54:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-28 17:54:50,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317919075144508 [2023-08-28 17:54:50,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-28 17:54:50,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-28 17:54:50,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:50,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-28 17:54:50,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,291 INFO L175 Difference]: Start difference. First operand has 68 places, 108 transitions, 695 flow. Second operand 3 states and 276 transitions. [2023-08-28 17:54:50,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 287 flow [2023-08-28 17:54:50,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 197 flow, removed 31 selfloop flow, removed 8 redundant places. [2023-08-28 17:54:50,293 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 139 flow [2023-08-28 17:54:50,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-08-28 17:54:50,293 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-28 17:54:50,293 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 139 flow [2023-08-28 17:54:50,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:50,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:50,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-28 17:54:50,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:50,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:50,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1557416083, now seen corresponding path program 1 times [2023-08-28 17:54:50,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:50,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247886488] [2023-08-28 17:54:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:50,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:50,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:50,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247886488] [2023-08-28 17:54:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247886488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:50,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:50,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556635076] [2023-08-28 17:54:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:50,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:50,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-28 17:54:50,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:50,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-28 17:54:50,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:50,388 INFO L130 PetriNetUnfolder]: 193/625 cut-off events. [2023-08-28 17:54:50,388 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2023-08-28 17:54:50,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 625 events. 193/625 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3650 event pairs, 167 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 1387. Up to 442 conditions per place. [2023-08-28 17:54:50,389 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 31 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2023-08-28 17:54:50,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 218 flow [2023-08-28 17:54:50,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-28 17:54:50,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701348747591522 [2023-08-28 17:54:50,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-28 17:54:50,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-28 17:54:50,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:50,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-28 17:54:50,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,394 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 139 flow. Second operand 3 states and 244 transitions. [2023-08-28 17:54:50,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 218 flow [2023-08-28 17:54:50,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:50,395 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 124 flow [2023-08-28 17:54:50,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-08-28 17:54:50,395 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-28 17:54:50,395 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 124 flow [2023-08-28 17:54:50,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:50,396 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:50,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-28 17:54:50,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:50,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1554151000, now seen corresponding path program 1 times [2023-08-28 17:54:50,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:50,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242176338] [2023-08-28 17:54:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:54:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242176338] [2023-08-28 17:54:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242176338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:50,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:50,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697584747] [2023-08-28 17:54:50,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:50,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:50,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-28 17:54:50,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:50,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-28 17:54:50,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:50,478 INFO L130 PetriNetUnfolder]: 137/449 cut-off events. [2023-08-28 17:54:50,479 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-08-28 17:54:50,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 449 events. 137/449 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2432 event pairs, 129 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 999. Up to 322 conditions per place. [2023-08-28 17:54:50,480 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 28 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-28 17:54:50,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 186 flow [2023-08-28 17:54:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-28 17:54:50,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605009633911368 [2023-08-28 17:54:50,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-28 17:54:50,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-28 17:54:50,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:50,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-28 17:54:50,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,483 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 124 flow. Second operand 3 states and 239 transitions. [2023-08-28 17:54:50,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 186 flow [2023-08-28 17:54:50,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:54:50,484 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 124 flow [2023-08-28 17:54:50,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-08-28 17:54:50,484 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -19 predicate places. [2023-08-28 17:54:50,484 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 124 flow [2023-08-28 17:54:50,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:50,485 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-28 17:54:50,485 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 17:54:50,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash 39088665, now seen corresponding path program 1 times [2023-08-28 17:54:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:50,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209787971] [2023-08-28 17:54:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:54:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209787971] [2023-08-28 17:54:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209787971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511234017] [2023-08-28 17:54:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:50,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-28 17:54:50,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:50,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-28 17:54:50,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:50,578 INFO L130 PetriNetUnfolder]: 141/445 cut-off events. [2023-08-28 17:54:50,578 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-08-28 17:54:50,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 445 events. 141/445 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2391 event pairs, 129 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 1007. Up to 322 conditions per place. [2023-08-28 17:54:50,579 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-28 17:54:50,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 188 flow [2023-08-28 17:54:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-28 17:54:50,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624277456647399 [2023-08-28 17:54:50,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-28 17:54:50,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-28 17:54:50,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:50,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-28 17:54:50,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,582 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 124 flow. Second operand 3 states and 240 transitions. [2023-08-28 17:54:50,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 188 flow [2023-08-28 17:54:50,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:54:50,583 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-28 17:54:50,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-28 17:54:50,583 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -20 predicate places. [2023-08-28 17:54:50,583 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-28 17:54:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:50,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 28 remaining) [2023-08-28 17:54:50,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 28 remaining) [2023-08-28 17:54:50,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2023-08-28 17:54:50,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2023-08-28 17:54:50,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2023-08-28 17:54:50,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 28 remaining) [2023-08-28 17:54:50,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-28 17:54:50,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:50,586 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 (1/2) [2023-08-28 17:54:50,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:50,594 INFO L130 PetriNetUnfolder]: 7/146 cut-off events. [2023-08-28 17:54:50,594 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:54:50,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 146 events. 7/146 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-28 17:54:50,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:50,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:50,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:50,595 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:50,596 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-08-28 17:54:50,603 INFO L130 PetriNetUnfolder]: 7/146 cut-off events. [2023-08-28 17:54:50,603 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:54:50,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 146 events. 7/146 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-28 17:54:50,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 7056 [2023-08-28 17:54:51,369 INFO L134 LiptonReduction]: Checked pairs total: 26869 [2023-08-28 17:54:51,369 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-28 17:54:51,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:54:51,370 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:51,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:54:51,373 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2023-08-28 17:54:51,373 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:54:51,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:51,373 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-28 17:54:51,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:54:51,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2124364757, now seen corresponding path program 1 times [2023-08-28 17:54:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851303196] [2023-08-28 17:54:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:51,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:51,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:54:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:51,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:54:51,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:54:51,396 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:54:51,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-28 17:54:51,397 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:54:51,398 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:54:51,398 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:54:51,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-28 17:54:51,415 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:54:51,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2023-08-28 17:54:51,427 INFO L130 PetriNetUnfolder]: 9/187 cut-off events. [2023-08-28 17:54:51,427 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:54:51,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 187 events. 9/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 154. Up to 10 conditions per place. [2023-08-28 17:54:51,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 141 transitions, 314 flow [2023-08-28 17:54:51,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 141 transitions, 314 flow [2023-08-28 17:54:51,430 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:51,431 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 141 transitions, 314 flow [2023-08-28 17:54:51,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 141 transitions, 314 flow [2023-08-28 17:54:51,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2023-08-28 17:54:51,441 INFO L130 PetriNetUnfolder]: 9/187 cut-off events. [2023-08-28 17:54:51,441 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:54:51,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 187 events. 9/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 154. Up to 10 conditions per place. [2023-08-28 17:54:51,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 12656 [2023-08-28 17:54:52,380 INFO L134 LiptonReduction]: Checked pairs total: 48341 [2023-08-28 17:54:52,380 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-28 17:54:52,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:54:52,381 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:52,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-28 17:54:52,382 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 17:54:52,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:52,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:52,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:54:52,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:54:52,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 33255865, now seen corresponding path program 1 times [2023-08-28 17:54:52,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:52,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938757433] [2023-08-28 17:54:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:52,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938757433] [2023-08-28 17:54:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938757433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:52,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:52,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:54:52,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075555740] [2023-08-28 17:54:52,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:52,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:54:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:54:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:54:52,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 219 [2023-08-28 17:54:52,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 198 flow. Second operand has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:52,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:52,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 219 [2023-08-28 17:54:52,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:54,400 INFO L130 PetriNetUnfolder]: 23951/41095 cut-off events. [2023-08-28 17:54:54,400 INFO L131 PetriNetUnfolder]: For 5773/5773 co-relation queries the response was YES. [2023-08-28 17:54:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76456 conditions, 41095 events. 23951/41095 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 366576 event pairs, 23951 based on Foata normal form. 3072/41041 useless extension candidates. Maximal degree in co-relation 7770. Up to 32162 conditions per place. [2023-08-28 17:54:54,827 INFO L137 encePairwiseOnDemand]: 201/219 looper letters, 33 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2023-08-28 17:54:54,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 228 flow [2023-08-28 17:54:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:54:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:54:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 257 transitions. [2023-08-28 17:54:54,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58675799086758 [2023-08-28 17:54:54,829 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 257 transitions. [2023-08-28 17:54:54,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 257 transitions. [2023-08-28 17:54:54,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:54,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 257 transitions. [2023-08-28 17:54:54,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:54,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:54,831 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:54,831 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 198 flow. Second operand 2 states and 257 transitions. [2023-08-28 17:54:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 228 flow [2023-08-28 17:54:54,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 216 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:54,834 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 150 flow [2023-08-28 17:54:54,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-08-28 17:54:54,835 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -16 predicate places. [2023-08-28 17:54:54,835 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 150 flow [2023-08-28 17:54:54,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:54,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:54,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:54,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-28 17:54:54,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:54:54,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1410994760, now seen corresponding path program 1 times [2023-08-28 17:54:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964063353] [2023-08-28 17:54:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964063353] [2023-08-28 17:54:54,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964063353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:54,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:54,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491241224] [2023-08-28 17:54:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:54,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:54:54,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:54,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:54,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:54:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:58,485 INFO L130 PetriNetUnfolder]: 48081/74367 cut-off events. [2023-08-28 17:54:58,485 INFO L131 PetriNetUnfolder]: For 2594/2594 co-relation queries the response was YES. [2023-08-28 17:54:58,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141307 conditions, 74367 events. 48081/74367 cut-off events. For 2594/2594 co-relation queries the response was YES. Maximal size of possible extension queue 2455. Compared 615156 event pairs, 41569 based on Foata normal form. 0/68529 useless extension candidates. Maximal degree in co-relation 141300. Up to 59562 conditions per place. [2023-08-28 17:54:58,908 INFO L137 encePairwiseOnDemand]: 207/219 looper letters, 55 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-28 17:54:58,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 353 flow [2023-08-28 17:54:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-28 17:54:58,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992389649923896 [2023-08-28 17:54:58,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-28 17:54:58,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-28 17:54:58,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:58,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-28 17:54:58,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:58,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:58,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:58,913 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 150 flow. Second operand 3 states and 328 transitions. [2023-08-28 17:54:58,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 353 flow [2023-08-28 17:54:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:58,917 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 225 flow [2023-08-28 17:54:58,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-08-28 17:54:58,917 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -13 predicate places. [2023-08-28 17:54:58,917 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 225 flow [2023-08-28 17:54:58,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:58,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:58,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:58,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-28 17:54:58,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:54:58,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash -96042624, now seen corresponding path program 1 times [2023-08-28 17:54:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:58,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805527164] [2023-08-28 17:54:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:58,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:58,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805527164] [2023-08-28 17:54:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805527164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:58,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562360763] [2023-08-28 17:54:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:58,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:58,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:58,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:54:58,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:58,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:58,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:54:58,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:03,976 INFO L130 PetriNetUnfolder]: 64454/97784 cut-off events. [2023-08-28 17:55:03,976 INFO L131 PetriNetUnfolder]: For 22281/23184 co-relation queries the response was YES. [2023-08-28 17:55:04,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217242 conditions, 97784 events. 64454/97784 cut-off events. For 22281/23184 co-relation queries the response was YES. Maximal size of possible extension queue 3255. Compared 820397 event pairs, 48320 based on Foata normal form. 0/90199 useless extension candidates. Maximal degree in co-relation 217233. Up to 75081 conditions per place. [2023-08-28 17:55:04,464 INFO L137 encePairwiseOnDemand]: 206/219 looper letters, 66 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2023-08-28 17:55:04,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 472 flow [2023-08-28 17:55:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-28 17:55:04,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502283105022831 [2023-08-28 17:55:04,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-28 17:55:04,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-28 17:55:04,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:04,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-28 17:55:04,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:04,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:04,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:04,468 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 225 flow. Second operand 3 states and 330 transitions. [2023-08-28 17:55:04,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 472 flow [2023-08-28 17:55:04,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:55:04,818 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 326 flow [2023-08-28 17:55:04,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2023-08-28 17:55:04,819 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -10 predicate places. [2023-08-28 17:55:04,819 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 326 flow [2023-08-28 17:55:04,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:04,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:04,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:04,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-28 17:55:04,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:04,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2134781322, now seen corresponding path program 1 times [2023-08-28 17:55:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067879004] [2023-08-28 17:55:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:55:04,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067879004] [2023-08-28 17:55:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067879004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:04,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:04,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21550057] [2023-08-28 17:55:04,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:04,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:55:04,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:04,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:04,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:55:04,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:11,643 INFO L130 PetriNetUnfolder]: 84113/127452 cut-off events. [2023-08-28 17:55:11,643 INFO L131 PetriNetUnfolder]: For 81480/83769 co-relation queries the response was YES. [2023-08-28 17:55:11,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324975 conditions, 127452 events. 84113/127452 cut-off events. For 81480/83769 co-relation queries the response was YES. Maximal size of possible extension queue 4349. Compared 1096539 event pairs, 56088 based on Foata normal form. 100/115644 useless extension candidates. Maximal degree in co-relation 324965. Up to 96452 conditions per place. [2023-08-28 17:55:12,479 INFO L137 encePairwiseOnDemand]: 206/219 looper letters, 74 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2023-08-28 17:55:12,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 710 flow [2023-08-28 17:55:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-28 17:55:12,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007610350076104 [2023-08-28 17:55:12,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-28 17:55:12,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-28 17:55:12,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:12,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-28 17:55:12,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:12,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:12,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:12,482 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 326 flow. Second operand 3 states and 329 transitions. [2023-08-28 17:55:12,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 710 flow [2023-08-28 17:55:13,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 640 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:13,491 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 546 flow [2023-08-28 17:55:13,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2023-08-28 17:55:13,492 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -8 predicate places. [2023-08-28 17:55:13,492 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 546 flow [2023-08-28 17:55:13,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:13,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:13,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:13,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-28 17:55:13,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:13,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2102616235, now seen corresponding path program 1 times [2023-08-28 17:55:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782925290] [2023-08-28 17:55:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:13,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:55:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782925290] [2023-08-28 17:55:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782925290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710539004] [2023-08-28 17:55:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:13,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 219 [2023-08-28 17:55:13,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:13,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:13,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 219 [2023-08-28 17:55:13,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:16,599 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1006] L702-1-->L702-3: Formula: (= |v_thr1Thread4of4ForFork0_#t~nondet6#1_13| |v_#race~x~0_288|) InVars {} OutVars{#race~x~0=|v_#race~x~0_288|, thr1Thread4of4ForFork0_#t~nondet6#1=|v_thr1Thread4of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread4of4ForFork0_#t~nondet6#1][122], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 14#L710-5true, 16#L701-3true, 107#L702true, 148#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 82#L702-3true]) [2023-08-28 17:55:16,599 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is not cut-off event [2023-08-28 17:55:16,599 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-28 17:55:16,599 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-28 17:55:16,599 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-28 17:55:16,601 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L702-1-->L702-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet6#1_17| |v_#race~x~0_284|) InVars {} OutVars{#race~x~0=|v_#race~x~0_284|, thr1Thread3of4ForFork0_#t~nondet6#1=|v_thr1Thread3of4ForFork0_#t~nondet6#1_17|} AuxVars[] AssignedVars[#race~x~0, thr1Thread3of4ForFork0_#t~nondet6#1][82], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, 14#L710-5true, 16#L701-3true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 78#L702-1true, 28#L702-3true, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:16,601 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-28 17:55:16,601 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-28 17:55:16,601 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-28 17:55:16,601 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-28 17:55:17,879 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([978] L702-4-->L703-1: Formula: (= |v_#race~x~0_270| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_270|, thr1Thread1of4ForFork0_#t~nondet6#1=|v_thr1Thread1of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread1of4ForFork0_#t~nondet6#1][18], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 14#L710-5true, 107#L702true, 148#true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 90#L703-1true, 78#L702-1true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:17,880 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-28 17:55:17,880 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-28 17:55:17,880 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-28 17:55:17,880 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-28 17:55:18,558 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1006] L702-1-->L702-3: Formula: (= |v_thr1Thread4of4ForFork0_#t~nondet6#1_13| |v_#race~x~0_288|) InVars {} OutVars{#race~x~0=|v_#race~x~0_288|, thr1Thread4of4ForFork0_#t~nondet6#1=|v_thr1Thread4of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread4of4ForFork0_#t~nondet6#1][122], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, 16#L701-3true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 107#L702true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 82#L702-3true]) [2023-08-28 17:55:18,559 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,559 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,559 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,559 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,560 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L702-1-->L702-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet6#1_17| |v_#race~x~0_284|) InVars {} OutVars{#race~x~0=|v_#race~x~0_284|, thr1Thread3of4ForFork0_#t~nondet6#1=|v_thr1Thread3of4ForFork0_#t~nondet6#1_17|} AuxVars[] AssignedVars[#race~x~0, thr1Thread3of4ForFork0_#t~nondet6#1][82], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 16#L701-3true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 78#L702-1true, 28#L702-3true, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:18,560 INFO L383 tUnfolder$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,561 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,561 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,561 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,744 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1006] L702-1-->L702-3: Formula: (= |v_thr1Thread4of4ForFork0_#t~nondet6#1_13| |v_#race~x~0_288|) InVars {} OutVars{#race~x~0=|v_#race~x~0_288|, thr1Thread4of4ForFork0_#t~nondet6#1=|v_thr1Thread4of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread4of4ForFork0_#t~nondet6#1][141], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, 14#L710-5true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 3#L702-4true, 107#L702true, 148#true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 82#L702-3true]) [2023-08-28 17:55:18,744 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,744 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,744 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,744 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,746 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L702-1-->L702-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet6#1_17| |v_#race~x~0_284|) InVars {} OutVars{#race~x~0=|v_#race~x~0_284|, thr1Thread3of4ForFork0_#t~nondet6#1=|v_thr1Thread3of4ForFork0_#t~nondet6#1_17|} AuxVars[] AssignedVars[#race~x~0, thr1Thread3of4ForFork0_#t~nondet6#1][111], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 14#L710-5true, 3#L702-4true, 148#true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 78#L702-1true, 28#L702-3true, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:18,746 INFO L383 tUnfolder$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,746 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,746 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,746 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,775 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L702-1-->L702-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet6#1_17| |v_#race~x~0_284|) InVars {} OutVars{#race~x~0=|v_#race~x~0_284|, thr1Thread3of4ForFork0_#t~nondet6#1=|v_thr1Thread3of4ForFork0_#t~nondet6#1_17|} AuxVars[] AssignedVars[#race~x~0, thr1Thread3of4ForFork0_#t~nondet6#1][82], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 16#L701-3true, 14#L710-5true, 148#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 78#L702-1true, 28#L702-3true, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue]) [2023-08-28 17:55:18,775 INFO L383 tUnfolder$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,775 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,775 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,775 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-28 17:55:18,776 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1006] L702-1-->L702-3: Formula: (= |v_thr1Thread4of4ForFork0_#t~nondet6#1_13| |v_#race~x~0_288|) InVars {} OutVars{#race~x~0=|v_#race~x~0_288|, thr1Thread4of4ForFork0_#t~nondet6#1=|v_thr1Thread4of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread4of4ForFork0_#t~nondet6#1][122], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, 16#L701-3true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 14#L710-5true, 107#L702true, 148#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 82#L702-3true]) [2023-08-28 17:55:18,776 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,776 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,776 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:18,776 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-28 17:55:20,241 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([978] L702-4-->L703-1: Formula: (= |v_#race~x~0_270| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_270|, thr1Thread1of4ForFork0_#t~nondet6#1=|v_thr1Thread1of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread1of4ForFork0_#t~nondet6#1][18], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 107#L702true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 90#L703-1true, 78#L702-1true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:20,241 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-28 17:55:20,241 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-28 17:55:20,241 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-28 17:55:20,241 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-28 17:55:21,304 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1006] L702-1-->L702-3: Formula: (= |v_thr1Thread4of4ForFork0_#t~nondet6#1_13| |v_#race~x~0_288|) InVars {} OutVars{#race~x~0=|v_#race~x~0_288|, thr1Thread4of4ForFork0_#t~nondet6#1=|v_thr1Thread4of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread4of4ForFork0_#t~nondet6#1][141], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 107#L702true, 3#L702-4true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 82#L702-3true]) [2023-08-28 17:55:21,304 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,304 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,304 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,304 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,306 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L702-1-->L702-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet6#1_17| |v_#race~x~0_284|) InVars {} OutVars{#race~x~0=|v_#race~x~0_284|, thr1Thread3of4ForFork0_#t~nondet6#1=|v_thr1Thread3of4ForFork0_#t~nondet6#1_17|} AuxVars[] AssignedVars[#race~x~0, thr1Thread3of4ForFork0_#t~nondet6#1][111], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 3#L702-4true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 78#L702-1true, 28#L702-3true, 168#true, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:21,306 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,306 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,306 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,306 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,340 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L702-1-->L702-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet6#1_17| |v_#race~x~0_284|) InVars {} OutVars{#race~x~0=|v_#race~x~0_284|, thr1Thread3of4ForFork0_#t~nondet6#1=|v_thr1Thread3of4ForFork0_#t~nondet6#1_17|} AuxVars[] AssignedVars[#race~x~0, thr1Thread3of4ForFork0_#t~nondet6#1][82], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 16#L701-3true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 78#L702-1true, 28#L702-3true, 168#true, 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:21,341 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,341 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,341 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,341 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-28 17:55:21,341 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1006] L702-1-->L702-3: Formula: (= |v_thr1Thread4of4ForFork0_#t~nondet6#1_13| |v_#race~x~0_288|) InVars {} OutVars{#race~x~0=|v_#race~x~0_288|, thr1Thread4of4ForFork0_#t~nondet6#1=|v_thr1Thread4of4ForFork0_#t~nondet6#1_13|} AuxVars[] AssignedVars[#race~x~0, thr1Thread4of4ForFork0_#t~nondet6#1][122], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 16#L701-3true, 107#L702true, 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 168#true, 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 82#L702-3true]) [2023-08-28 17:55:21,342 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,342 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,342 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is not cut-off event [2023-08-28 17:55:21,342 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is not cut-off event [2023-08-28 17:55:23,389 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, 14#L710-5true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, thr1Thread1of4ForFork0InUse, 87#L703-2true, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:23,389 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is not cut-off event [2023-08-28 17:55:23,389 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is not cut-off event [2023-08-28 17:55:23,390 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is not cut-off event [2023-08-28 17:55:23,390 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is not cut-off event [2023-08-28 17:55:25,691 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [120#thr1EXITtrue, Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, 14#L710-5true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:25,691 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is not cut-off event [2023-08-28 17:55:25,691 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is not cut-off event [2023-08-28 17:55:25,692 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is not cut-off event [2023-08-28 17:55:25,692 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is not cut-off event [2023-08-28 17:55:26,350 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, 87#L703-2true, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:26,350 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,351 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,351 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,351 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,627 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, 14#L710-5true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, thr1Thread1of4ForFork0InUse, 87#L703-2true, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue]) [2023-08-28 17:55:26,627 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,627 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,627 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-28 17:55:26,627 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-28 17:55:28,387 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [120#thr1EXITtrue, Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, 67#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:28,387 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,387 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,387 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,387 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,615 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [120#thr1EXITtrue, Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, 14#L710-5true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|), 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue]) [2023-08-28 17:55:28,615 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,615 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,615 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,615 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is not cut-off event [2023-08-28 17:55:28,946 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, 87#L703-2true, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:28,946 INFO L383 tUnfolder$Statistics]: this new event has 46 ancestors and is not cut-off event [2023-08-28 17:55:28,946 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is not cut-off event [2023-08-28 17:55:28,946 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is not cut-off event [2023-08-28 17:55:28,946 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is not cut-off event [2023-08-28 17:55:30,719 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([905] L703-->L703-1: Formula: (= |v_#race~x~0_7| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_7|} AuxVars[] AssignedVars[#race~x~0][163], [120#thr1EXITtrue, Black: 158#(= |thr1Thread1of4ForFork0_#t~nondet6#1| |#race~x~0|), 170#(= |#race~x~0| 0), 162#true, Black: 164#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet5#1|), 148#true, 91#L710-4true, thr1Thread1of4ForFork0InUse, 52#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread2of4ForFork0InUse, thr1Thread3of4ForFork0InUse, 51#L703-1true, thr1Thread4of4ForFork0InUse, 58#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, Black: 153#(= |thr1Thread1of4ForFork0_#t~nondet5#1| |#race~x~0|)]) [2023-08-28 17:55:30,719 INFO L383 tUnfolder$Statistics]: this new event has 48 ancestors and is not cut-off event [2023-08-28 17:55:30,719 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is not cut-off event [2023-08-28 17:55:30,719 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is not cut-off event [2023-08-28 17:55:30,719 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is not cut-off event [2023-08-28 17:55:32,907 INFO L130 PetriNetUnfolder]: 235306/337568 cut-off events. [2023-08-28 17:55:32,907 INFO L131 PetriNetUnfolder]: For 415803/431175 co-relation queries the response was YES. [2023-08-28 17:55:33,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962767 conditions, 337568 events. 235306/337568 cut-off events. For 415803/431175 co-relation queries the response was YES. Maximal size of possible extension queue 11404. Compared 2927619 event pairs, 78887 based on Foata normal form. 3751/312791 useless extension candidates. Maximal degree in co-relation 962756. Up to 157777 conditions per place. [2023-08-28 17:55:35,171 INFO L137 encePairwiseOnDemand]: 199/219 looper letters, 113 selfloop transitions, 57 changer transitions 0/192 dead transitions. [2023-08-28 17:55:35,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 192 transitions, 1355 flow [2023-08-28 17:55:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-28 17:55:35,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512937595129376 [2023-08-28 17:55:35,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-28 17:55:35,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-28 17:55:35,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:35,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-28 17:55:35,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:35,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:35,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:35,174 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 546 flow. Second operand 3 states and 337 transitions. [2023-08-28 17:55:35,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 192 transitions, 1355 flow [2023-08-28 17:55:37,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 192 transitions, 1249 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:37,848 INFO L231 Difference]: Finished difference. Result has 85 places, 167 transitions, 1186 flow [2023-08-28 17:55:37,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1186, PETRI_PLACES=85, PETRI_TRANSITIONS=167} [2023-08-28 17:55:37,849 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2023-08-28 17:55:37,849 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 167 transitions, 1186 flow [2023-08-28 17:55:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:37,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:37,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-28 17:55:37,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:37,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -831441749, now seen corresponding path program 1 times [2023-08-28 17:55:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:37,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070558987] [2023-08-28 17:55:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:37,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070558987] [2023-08-28 17:55:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070558987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:55:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566541465] [2023-08-28 17:55:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:37,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:37,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 219 [2023-08-28 17:55:37,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 167 transitions, 1186 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:37,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:37,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 219 [2023-08-28 17:55:37,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:37,991 INFO L130 PetriNetUnfolder]: 463/1651 cut-off events. [2023-08-28 17:55:37,991 INFO L131 PetriNetUnfolder]: For 2808/2808 co-relation queries the response was YES. [2023-08-28 17:55:37,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 1651 events. 463/1651 cut-off events. For 2808/2808 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12389 event pairs, 51 based on Foata normal form. 712/2330 useless extension candidates. Maximal degree in co-relation 4506. Up to 944 conditions per place. [2023-08-28 17:55:37,995 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 33 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2023-08-28 17:55:37,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 397 flow [2023-08-28 17:55:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-28 17:55:37,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528158295281583 [2023-08-28 17:55:37,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-28 17:55:37,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-28 17:55:37,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:37,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-28 17:55:37,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:37,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:37,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:37,998 INFO L175 Difference]: Start difference. First operand has 85 places, 167 transitions, 1186 flow. Second operand 3 states and 347 transitions. [2023-08-28 17:55:37,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 397 flow [2023-08-28 17:55:38,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 273 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-08-28 17:55:38,002 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 184 flow [2023-08-28 17:55:38,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-08-28 17:55:38,002 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -19 predicate places. [2023-08-28 17:55:38,002 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 184 flow [2023-08-28 17:55:38,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:38,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-28 17:55:38,003 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:38,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:38,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1688604085, now seen corresponding path program 1 times [2023-08-28 17:55:38,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300715773] [2023-08-28 17:55:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:55:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300715773] [2023-08-28 17:55:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300715773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:38,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636728296] [2023-08-28 17:55:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:38,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:55:38,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:38,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:55:38,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:38,145 INFO L130 PetriNetUnfolder]: 529/1710 cut-off events. [2023-08-28 17:55:38,145 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-08-28 17:55:38,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1710 events. 529/1710 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12632 event pairs, 477 based on Foata normal form. 0/1681 useless extension candidates. Maximal degree in co-relation 3765. Up to 1206 conditions per place. [2023-08-28 17:55:38,149 INFO L137 encePairwiseOnDemand]: 216/219 looper letters, 42 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-28 17:55:38,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 286 flow [2023-08-28 17:55:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-28 17:55:38,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596651445966514 [2023-08-28 17:55:38,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-28 17:55:38,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-28 17:55:38,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:38,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-28 17:55:38,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,152 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 184 flow. Second operand 3 states and 302 transitions. [2023-08-28 17:55:38,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 286 flow [2023-08-28 17:55:38,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:55:38,154 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 178 flow [2023-08-28 17:55:38,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2023-08-28 17:55:38,154 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -19 predicate places. [2023-08-28 17:55:38,154 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 178 flow [2023-08-28 17:55:38,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:38,155 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:38,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-28 17:55:38,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:38,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1507636070, now seen corresponding path program 1 times [2023-08-28 17:55:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:38,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334153736] [2023-08-28 17:55:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:38,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:55:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334153736] [2023-08-28 17:55:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334153736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:38,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456273647] [2023-08-28 17:55:38,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:38,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:38,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:55:38,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:38,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:55:38,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:38,300 INFO L130 PetriNetUnfolder]: 529/1694 cut-off events. [2023-08-28 17:55:38,300 INFO L131 PetriNetUnfolder]: For 520/520 co-relation queries the response was YES. [2023-08-28 17:55:38,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 1694 events. 529/1694 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 12380 event pairs, 481 based on Foata normal form. 0/1662 useless extension candidates. Maximal degree in co-relation 3711. Up to 1214 conditions per place. [2023-08-28 17:55:38,303 INFO L137 encePairwiseOnDemand]: 216/219 looper letters, 40 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-08-28 17:55:38,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 271 flow [2023-08-28 17:55:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-28 17:55:38,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581430745814307 [2023-08-28 17:55:38,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-28 17:55:38,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-28 17:55:38,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:38,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-28 17:55:38,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,306 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 178 flow. Second operand 3 states and 301 transitions. [2023-08-28 17:55:38,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 271 flow [2023-08-28 17:55:38,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:38,307 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 178 flow [2023-08-28 17:55:38,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-08-28 17:55:38,308 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -20 predicate places. [2023-08-28 17:55:38,308 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 178 flow [2023-08-28 17:55:38,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:38,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-28 17:55:38,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:38,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1517739878, now seen corresponding path program 1 times [2023-08-28 17:55:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305324310] [2023-08-28 17:55:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:55:38,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305324310] [2023-08-28 17:55:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305324310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:38,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:38,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:38,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826586662] [2023-08-28 17:55:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:38,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:55:38,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:38,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:55:38,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:38,525 INFO L130 PetriNetUnfolder]: 529/1672 cut-off events. [2023-08-28 17:55:38,525 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-28 17:55:38,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 1672 events. 529/1672 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12127 event pairs, 481 based on Foata normal form. 0/1642 useless extension candidates. Maximal degree in co-relation 3679. Up to 1214 conditions per place. [2023-08-28 17:55:38,528 INFO L137 encePairwiseOnDemand]: 216/219 looper letters, 37 selfloop transitions, 2 changer transitions 5/61 dead transitions. [2023-08-28 17:55:38,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 271 flow [2023-08-28 17:55:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-28 17:55:38,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581430745814307 [2023-08-28 17:55:38,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-28 17:55:38,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-28 17:55:38,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:38,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-28 17:55:38,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,531 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 178 flow. Second operand 3 states and 301 transitions. [2023-08-28 17:55:38,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 271 flow [2023-08-28 17:55:38,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:38,533 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 161 flow [2023-08-28 17:55:38,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2023-08-28 17:55:38,533 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -21 predicate places. [2023-08-28 17:55:38,534 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 161 flow [2023-08-28 17:55:38,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:38,534 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:38,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-28 17:55:38,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:38,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2042819625, now seen corresponding path program 1 times [2023-08-28 17:55:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644693961] [2023-08-28 17:55:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-28 17:55:38,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:38,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644693961] [2023-08-28 17:55:38,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644693961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:38,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:38,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:38,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323412416] [2023-08-28 17:55:38,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:38,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:38,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:38,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:55:38,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:38,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:55:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:38,666 INFO L130 PetriNetUnfolder]: 401/1208 cut-off events. [2023-08-28 17:55:38,666 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-28 17:55:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 1208 events. 401/1208 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8104 event pairs, 367 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 2759. Up to 870 conditions per place. [2023-08-28 17:55:38,668 INFO L137 encePairwiseOnDemand]: 216/219 looper letters, 36 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-28 17:55:38,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 239 flow [2023-08-28 17:55:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-28 17:55:38,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2023-08-28 17:55:38,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-28 17:55:38,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-28 17:55:38,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:38,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-28 17:55:38,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,671 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 161 flow. Second operand 3 states and 297 transitions. [2023-08-28 17:55:38,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 239 flow [2023-08-28 17:55:38,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:38,673 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 161 flow [2023-08-28 17:55:38,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-28 17:55:38,673 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -27 predicate places. [2023-08-28 17:55:38,673 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 161 flow [2023-08-28 17:55:38,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:38,674 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:38,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-28 17:55:38,674 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 17:55:38,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2046130364, now seen corresponding path program 1 times [2023-08-28 17:55:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:38,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336017903] [2023-08-28 17:55:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:38,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-28 17:55:38,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:38,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336017903] [2023-08-28 17:55:38,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336017903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:38,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:38,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:55:38,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664563779] [2023-08-28 17:55:38,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:38,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:55:38,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:55:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:55:38,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 219 [2023-08-28 17:55:38,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:38,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 219 [2023-08-28 17:55:38,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:38,793 INFO L130 PetriNetUnfolder]: 393/1184 cut-off events. [2023-08-28 17:55:38,793 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2023-08-28 17:55:38,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1184 events. 393/1184 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7958 event pairs, 367 based on Foata normal form. 16/1186 useless extension candidates. Maximal degree in co-relation 2711. Up to 870 conditions per place. [2023-08-28 17:55:38,794 INFO L137 encePairwiseOnDemand]: 217/219 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-28 17:55:38,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 237 flow [2023-08-28 17:55:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:55:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:55:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-28 17:55:38,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505327245053272 [2023-08-28 17:55:38,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-28 17:55:38,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-28 17:55:38,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:38,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-28 17:55:38,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,796 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 161 flow. Second operand 3 states and 296 transitions. [2023-08-28 17:55:38,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 237 flow [2023-08-28 17:55:38,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:38,797 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-08-28 17:55:38,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-08-28 17:55:38,798 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -28 predicate places. [2023-08-28 17:55:38,798 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-08-28 17:55:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:38,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2023-08-28 17:55:38,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2023-08-28 17:55:38,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2023-08-28 17:55:38,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2023-08-28 17:55:38,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2023-08-28 17:55:38,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2023-08-28 17:55:38,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2023-08-28 17:55:38,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2023-08-28 17:55:38,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2023-08-28 17:55:38,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2023-08-28 17:55:38,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2023-08-28 17:55:38,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-28 17:55:38,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:38,803 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 (1/2) [2023-08-28 17:55:38,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2023-08-28 17:55:38,812 INFO L130 PetriNetUnfolder]: 9/187 cut-off events. [2023-08-28 17:55:38,812 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:55:38,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 187 events. 9/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 154. Up to 10 conditions per place. [2023-08-28 17:55:38,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 141 transitions, 314 flow [2023-08-28 17:55:38,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 141 transitions, 314 flow [2023-08-28 17:55:38,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:55:38,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 141 transitions, 314 flow [2023-08-28 17:55:38,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 141 transitions, 314 flow [2023-08-28 17:55:38,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2023-08-28 17:55:38,823 INFO L130 PetriNetUnfolder]: 9/187 cut-off events. [2023-08-28 17:55:38,823 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:55:38,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 187 events. 9/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 154. Up to 10 conditions per place. [2023-08-28 17:55:38,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 12656 [2023-08-28 17:55:39,680 INFO L134 LiptonReduction]: Checked pairs total: 48761 [2023-08-28 17:55:39,681 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-28 17:55:39,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:55:39,682 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:55:39,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:55:39,685 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2023-08-28 17:55:39,685 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:55:39,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:39,685 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:39,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:55:39,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1465877634, now seen corresponding path program 1 times [2023-08-28 17:55:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843393384] [2023-08-28 17:55:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:55:39,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:55:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:55:39,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:55:39,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:55:39,708 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:55:39,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-28 17:55:39,708 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:55:39,709 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:55:39,709 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:55:39,709 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-28 17:55:39,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:55:39,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 170 transitions, 385 flow [2023-08-28 17:55:39,744 INFO L130 PetriNetUnfolder]: 11/228 cut-off events. [2023-08-28 17:55:39,744 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 17:55:39,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 228 events. 11/228 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 200. Up to 12 conditions per place. [2023-08-28 17:55:39,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 170 transitions, 385 flow [2023-08-28 17:55:39,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 170 transitions, 385 flow [2023-08-28 17:55:39,747 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:55:39,747 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 170 transitions, 385 flow [2023-08-28 17:55:39,747 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 170 transitions, 385 flow [2023-08-28 17:55:39,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 170 transitions, 385 flow [2023-08-28 17:55:39,759 INFO L130 PetriNetUnfolder]: 11/228 cut-off events. [2023-08-28 17:55:39,759 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 17:55:39,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 228 events. 11/228 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 200. Up to 12 conditions per place. [2023-08-28 17:55:39,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 19880 [2023-08-28 17:55:40,759 INFO L134 LiptonReduction]: Checked pairs total: 81894 [2023-08-28 17:55:40,759 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-28 17:55:40,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:55:40,760 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;@6b378afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:55:40,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-28 17:55:40,761 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 17:55:40,761 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:55:40,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:40,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:55:40,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 17:55:40,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 44639647, now seen corresponding path program 1 times [2023-08-28 17:55:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882127185] [2023-08-28 17:55:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:55:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882127185] [2023-08-28 17:55:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882127185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:55:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:55:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:55:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729879128] [2023-08-28 17:55:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:55:40,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:55:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:55:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:55:40,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 263 [2023-08-28 17:55:40,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 249 flow. Second operand has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:40,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:40,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 263 [2023-08-28 17:55:40,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:56:03,694 INFO L130 PetriNetUnfolder]: 252783/397913 cut-off events. [2023-08-28 17:56:03,694 INFO L131 PetriNetUnfolder]: For 83919/83919 co-relation queries the response was YES. [2023-08-28 17:56:04,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753787 conditions, 397913 events. 252783/397913 cut-off events. For 83919/83919 co-relation queries the response was YES. Maximal size of possible extension queue 11232. Compared 4025453 event pairs, 252783 based on Foata normal form. 33058/413523 useless extension candidates. Maximal degree in co-relation 85108. Up to 319490 conditions per place. [2023-08-28 17:56:06,401 INFO L137 encePairwiseOnDemand]: 241/263 looper letters, 41 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-28 17:56:06,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 80 transitions, 287 flow [2023-08-28 17:56:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:56:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:56:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-08-28 17:56:06,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5874524714828897 [2023-08-28 17:56:06,403 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-08-28 17:56:06,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-08-28 17:56:06,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:56:06,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-08-28 17:56:06,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:06,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:06,405 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:06,405 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 249 flow. Second operand 2 states and 309 transitions. [2023-08-28 17:56:06,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 80 transitions, 287 flow [2023-08-28 17:56:06,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 80 transitions, 267 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-28 17:56:06,481 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 185 flow [2023-08-28 17:56:06,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=185, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2023-08-28 17:56:06,481 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -20 predicate places. [2023-08-28 17:56:06,482 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 185 flow [2023-08-28 17:56:06,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:06,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:56:06,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:56:06,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-28 17:56:06,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 17:56:06,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:56:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1578766964, now seen corresponding path program 1 times [2023-08-28 17:56:06,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:56:06,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105095481] [2023-08-28 17:56:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:56:06,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:56:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:56:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:56:06,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:56:06,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105095481] [2023-08-28 17:56:06,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105095481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:56:06,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:56:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:56:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543433757] [2023-08-28 17:56:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:56:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:56:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:56:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:56:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:56:06,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 263 [2023-08-28 17:56:06,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:06,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:56:06,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 263 [2023-08-28 17:56:06,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand