./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.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 aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:52:00,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:52:00,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:52:00,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:52:00,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:52:00,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:52:00,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:52:00,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:52:00,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:52:00,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:52:00,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:52:00,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:52:00,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:52:00,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:52:00,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:52:00,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:52:00,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:52:00,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:52:00,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:52:00,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:52:00,536 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:52:00,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:52:00,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:52:00,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:52:00,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:52:00,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:52:00,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:52:00,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:52:00,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:52:00,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:52:00,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:52:00,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:52:00,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:52:00,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:52:00,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:52:00,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:52:00,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:52:00,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:52:00,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:52:00,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:52:00,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:52:00,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:52:00,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:52:00,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:52:00,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:52:00,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:52:00,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:52:00,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:52:00,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:52:00,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:52:00,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:52:00,586 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:52:00,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:52:00,587 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:52:00,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:52:00,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:52:00,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:52:00,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:52:00,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:52:00,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:52:00,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:52:00,588 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:52:00,588 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:52:00,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:52:00,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:52:00,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:52:00,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:52:00,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:52:00,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:52:00,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:52:00,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:52:00,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:52:00,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:52:00,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:52:00,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:52:00,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:52:00,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:52:00,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:52:00,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b [2022-04-18 15:52:00,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:52:00,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:52:00,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:52:00,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:52:00,842 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:52:00,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i [2022-04-18 15:52:00,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8bf210f/c2b1c2fa5ebc49f4a3f59238e1a578d8/FLAG8c984cfaf [2022-04-18 15:52:01,361 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:52:01,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i [2022-04-18 15:52:01,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8bf210f/c2b1c2fa5ebc49f4a3f59238e1a578d8/FLAG8c984cfaf [2022-04-18 15:52:01,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8bf210f/c2b1c2fa5ebc49f4a3f59238e1a578d8 [2022-04-18 15:52:01,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:52:01,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:52:01,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:52:01,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:52:01,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:52:01,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:01,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d8b184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01, skipping insertion in model container [2022-04-18 15:52:01,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:01,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:52:01,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:52:01,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i[30879,30892] [2022-04-18 15:52:01,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i[31740,31753] [2022-04-18 15:52:01,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i[32508,32521] [2022-04-18 15:52:01,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:52:01,786 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:52:01,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i[30879,30892] [2022-04-18 15:52:01,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i[31740,31753] [2022-04-18 15:52:01,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/scull.i[32508,32521] [2022-04-18 15:52:01,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:52:01,890 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:52:01,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01 WrapperNode [2022-04-18 15:52:01,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:52:01,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:52:01,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:52:01,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:52:01,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:01,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:01,981 INFO L137 Inliner]: procedures = 185, calls = 58, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 524 [2022-04-18 15:52:01,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:52:01,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:52:01,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:52:01,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:52:01,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:01,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:52:02,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:52:02,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:52:02,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:52:02,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (1/1) ... [2022-04-18 15:52:02,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:52:02,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:02,076 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) [2022-04-18 15:52:02,090 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 [2022-04-18 15:52:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:52:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 15:52:02,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 15:52:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 15:52:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 15:52:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:52:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:52:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:52:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure loader [2022-04-18 15:52:02,125 INFO L138 BoogieDeclarations]: Found implementation of procedure loader [2022-04-18 15:52:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:52:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:52:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:52:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:52:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:52:02,127 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:52:02,297 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:52:02,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:52:02,388 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L890: assume { :end_inline_scull_trim } true; [2022-04-18 15:52:02,389 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-1: assume -2147483648 <= scull_cleanup_module_#t~ret42#1 && scull_cleanup_module_#t~ret42#1 <= 2147483647; [2022-04-18 15:52:02,389 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-2: havoc scull_cleanup_module_#t~ret42#1; [2022-04-18 15:52:02,389 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: assume { :end_inline_scull_cleanup_module } true; [2022-04-18 15:52:02,389 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint scull_trim_returnLabel#1: scull_cleanup_module_#t~ret42#1 := scull_trim_#res#1; [2022-04-18 15:52:02,390 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L898: scull_init_module_#res#1 := scull_init_module_~result~0#1; [2022-04-18 15:52:02,749 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:52:02,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:52:02,759 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-18 15:52:02,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:52:02 BoogieIcfgContainer [2022-04-18 15:52:02,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:52:02,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:52:02,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:52:02,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:52:02,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:52:01" (1/3) ... [2022-04-18 15:52:02,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e6098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:52:02, skipping insertion in model container [2022-04-18 15:52:02,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:01" (2/3) ... [2022-04-18 15:52:02,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e6098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:52:02, skipping insertion in model container [2022-04-18 15:52:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:52:02" (3/3) ... [2022-04-18 15:52:02,768 INFO L111 eAbstractionObserver]: Analyzing ICFG scull.i [2022-04-18 15:52:02,772 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:52:02,772 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:52:02,772 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-04-18 15:52:02,772 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:52:02,936 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:52:02,989 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:52:02,996 INFO L340 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 [2022-04-18 15:52:02,996 INFO L341 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2022-04-18 15:52:03,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 588 places, 594 transitions, 1212 flow [2022-04-18 15:52:03,270 INFO L129 PetriNetUnfolder]: 16/591 cut-off events. [2022-04-18 15:52:03,271 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 15:52:03,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 591 events. 16/591 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1807 event pairs, 0 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 534. Up to 4 conditions per place. [2022-04-18 15:52:03,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 588 places, 594 transitions, 1212 flow [2022-04-18 15:52:03,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 573 places, 579 transitions, 1173 flow [2022-04-18 15:52:03,323 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2022-04-18 15:52:03,323 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:52:03,324 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:03,325 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:03,325 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2051532549, now seen corresponding path program 1 times [2022-04-18 15:52:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:03,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138909224] [2022-04-18 15:52:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:03,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:03,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138909224] [2022-04-18 15:52:03,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138909224] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:03,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:03,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109189420] [2022-04-18 15:52:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:03,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:03,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:03,653 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 574 out of 594 [2022-04-18 15:52:03,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 579 transitions, 1173 flow. Second operand has 3 states, 3 states have (on average 575.3333333333334) internal successors, (1726), 3 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:03,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:03,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 574 of 594 [2022-04-18 15:52:03,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:04,232 INFO L129 PetriNetUnfolder]: 86/2469 cut-off events. [2022-04-18 15:52:04,232 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2022-04-18 15:52:04,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 2469 events. 86/2469 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 14793 event pairs, 12 based on Foata normal form. 22/2201 useless extension candidates. Maximal degree in co-relation 2263. Up to 41 conditions per place. [2022-04-18 15:52:04,290 INFO L132 encePairwiseOnDemand]: 586/594 looper letters, 11 selfloop transitions, 2 changer transitions 0/573 dead transitions. [2022-04-18 15:52:04,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 573 transitions, 1193 flow [2022-04-18 15:52:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1741 transitions. [2022-04-18 15:52:04,312 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9769921436588104 [2022-04-18 15:52:04,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1741 transitions. [2022-04-18 15:52:04,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1741 transitions. [2022-04-18 15:52:04,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:04,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1741 transitions. [2022-04-18 15:52:04,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 580.3333333333334) internal successors, (1741), 3 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,345 INFO L186 Difference]: Start difference. First operand has 573 places, 579 transitions, 1173 flow. Second operand 3 states and 1741 transitions. [2022-04-18 15:52:04,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 573 transitions, 1193 flow [2022-04-18 15:52:04,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 573 transitions, 1181 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:52:04,370 INFO L242 Difference]: Finished difference. Result has 565 places, 571 transitions, 1158 flow [2022-04-18 15:52:04,373 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1158, PETRI_PLACES=565, PETRI_TRANSITIONS=571} [2022-04-18 15:52:04,376 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, -8 predicate places. [2022-04-18 15:52:04,377 INFO L478 AbstractCegarLoop]: Abstraction has has 565 places, 571 transitions, 1158 flow [2022-04-18 15:52:04,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 575.3333333333334) internal successors, (1726), 3 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,379 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:04,379 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:04,380 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:52:04,380 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash -312639206, now seen corresponding path program 1 times [2022-04-18 15:52:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:04,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748843328] [2022-04-18 15:52:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:04,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:04,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748843328] [2022-04-18 15:52:04,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748843328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:04,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:04,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:52:04,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056070121] [2022-04-18 15:52:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:04,596 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:52:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:52:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:52:04,602 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 556 out of 594 [2022-04-18 15:52:04,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 571 transitions, 1158 flow. Second operand has 6 states, 6 states have (on average 558.0) internal successors, (3348), 6 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:04,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 556 of 594 [2022-04-18 15:52:04,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:04,901 INFO L129 PetriNetUnfolder]: 19/776 cut-off events. [2022-04-18 15:52:04,901 INFO L130 PetriNetUnfolder]: For 2/24 co-relation queries the response was YES. [2022-04-18 15:52:04,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 776 events. 19/776 cut-off events. For 2/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3071 event pairs, 0 based on Foata normal form. 8/702 useless extension candidates. Maximal degree in co-relation 755. Up to 16 conditions per place. [2022-04-18 15:52:04,926 INFO L132 encePairwiseOnDemand]: 589/594 looper letters, 22 selfloop transitions, 4 changer transitions 0/570 dead transitions. [2022-04-18 15:52:04,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 570 transitions, 1208 flow [2022-04-18 15:52:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:52:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:52:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3363 transitions. [2022-04-18 15:52:04,934 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9436026936026936 [2022-04-18 15:52:04,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3363 transitions. [2022-04-18 15:52:04,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3363 transitions. [2022-04-18 15:52:04,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:04,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3363 transitions. [2022-04-18 15:52:04,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 560.5) internal successors, (3363), 6 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,950 INFO L186 Difference]: Start difference. First operand has 565 places, 571 transitions, 1158 flow. Second operand 6 states and 3363 transitions. [2022-04-18 15:52:04,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 570 transitions, 1208 flow [2022-04-18 15:52:04,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 570 transitions, 1208 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:52:04,960 INFO L242 Difference]: Finished difference. Result has 569 places, 570 transitions, 1164 flow [2022-04-18 15:52:04,961 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1164, PETRI_PLACES=569, PETRI_TRANSITIONS=570} [2022-04-18 15:52:04,961 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, -4 predicate places. [2022-04-18 15:52:04,962 INFO L478 AbstractCegarLoop]: Abstraction has has 569 places, 570 transitions, 1164 flow [2022-04-18 15:52:04,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 558.0) internal successors, (3348), 6 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:04,964 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:04,964 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:04,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:52:04,964 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting loaderErr0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:04,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:04,965 INFO L85 PathProgramCache]: Analyzing trace with hash 643158791, now seen corresponding path program 1 times [2022-04-18 15:52:04,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:04,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738694994] [2022-04-18 15:52:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:05,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738694994] [2022-04-18 15:52:05,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738694994] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:05,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:05,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:05,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697062192] [2022-04-18 15:52:05,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:05,027 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:05,031 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 556 out of 594 [2022-04-18 15:52:05,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 570 transitions, 1164 flow. Second operand has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:05,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:05,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 556 of 594 [2022-04-18 15:52:05,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:10,481 INFO L129 PetriNetUnfolder]: 2904/30541 cut-off events. [2022-04-18 15:52:10,482 INFO L130 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-04-18 15:52:10,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34134 conditions, 30541 events. 2904/30541 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 414153 event pairs, 763 based on Foata normal form. 0/26200 useless extension candidates. Maximal degree in co-relation 29404. Up to 1907 conditions per place. [2022-04-18 15:52:10,976 INFO L132 encePairwiseOnDemand]: 576/594 looper letters, 39 selfloop transitions, 13 changer transitions 0/593 dead transitions. [2022-04-18 15:52:10,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 593 transitions, 1319 flow [2022-04-18 15:52:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1725 transitions. [2022-04-18 15:52:10,980 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.968013468013468 [2022-04-18 15:52:10,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1725 transitions. [2022-04-18 15:52:10,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1725 transitions. [2022-04-18 15:52:10,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:10,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1725 transitions. [2022-04-18 15:52:10,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:10,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:10,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:10,990 INFO L186 Difference]: Start difference. First operand has 569 places, 570 transitions, 1164 flow. Second operand 3 states and 1725 transitions. [2022-04-18 15:52:10,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 593 transitions, 1319 flow [2022-04-18 15:52:10,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 593 transitions, 1312 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 15:52:11,005 INFO L242 Difference]: Finished difference. Result has 569 places, 583 transitions, 1271 flow [2022-04-18 15:52:11,006 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1271, PETRI_PLACES=569, PETRI_TRANSITIONS=583} [2022-04-18 15:52:11,008 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, -4 predicate places. [2022-04-18 15:52:11,008 INFO L478 AbstractCegarLoop]: Abstraction has has 569 places, 583 transitions, 1271 flow [2022-04-18 15:52:11,009 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:11,009 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:11,009 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:11,010 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:52:11,010 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting loaderErr1ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash -323678390, now seen corresponding path program 1 times [2022-04-18 15:52:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:11,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780300218] [2022-04-18 15:52:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:11,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:11,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780300218] [2022-04-18 15:52:11,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780300218] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:11,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:11,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:11,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846549899] [2022-04-18 15:52:11,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:11,087 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:11,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:11,091 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 553 out of 594 [2022-04-18 15:52:11,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 583 transitions, 1271 flow. Second operand has 3 states, 3 states have (on average 554.6666666666666) internal successors, (1664), 3 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:11,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:11,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 553 of 594 [2022-04-18 15:52:11,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:18,731 INFO L129 PetriNetUnfolder]: 6837/48997 cut-off events. [2022-04-18 15:52:18,731 INFO L130 PetriNetUnfolder]: For 1234/1284 co-relation queries the response was YES. [2022-04-18 15:52:19,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60468 conditions, 48997 events. 6837/48997 cut-off events. For 1234/1284 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 693369 event pairs, 3250 based on Foata normal form. 0/41517 useless extension candidates. Maximal degree in co-relation 33413. Up to 7214 conditions per place. [2022-04-18 15:52:19,266 INFO L132 encePairwiseOnDemand]: 583/594 looper letters, 47 selfloop transitions, 10 changer transitions 0/608 dead transitions. [2022-04-18 15:52:19,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 608 transitions, 1438 flow [2022-04-18 15:52:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1717 transitions. [2022-04-18 15:52:19,270 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9635241301907969 [2022-04-18 15:52:19,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1717 transitions. [2022-04-18 15:52:19,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1717 transitions. [2022-04-18 15:52:19,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:19,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1717 transitions. [2022-04-18 15:52:19,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 572.3333333333334) internal successors, (1717), 3 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:19,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:19,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:19,281 INFO L186 Difference]: Start difference. First operand has 569 places, 583 transitions, 1271 flow. Second operand 3 states and 1717 transitions. [2022-04-18 15:52:19,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 608 transitions, 1438 flow [2022-04-18 15:52:19,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 608 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:19,304 INFO L242 Difference]: Finished difference. Result has 571 places, 592 transitions, 1323 flow [2022-04-18 15:52:19,305 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1323, PETRI_PLACES=571, PETRI_TRANSITIONS=592} [2022-04-18 15:52:19,308 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, -2 predicate places. [2022-04-18 15:52:19,308 INFO L478 AbstractCegarLoop]: Abstraction has has 571 places, 592 transitions, 1323 flow [2022-04-18 15:52:19,309 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.6666666666666) internal successors, (1664), 3 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:19,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:19,310 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:19,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:52:19,310 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting loaderErr2ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:19,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash -500014260, now seen corresponding path program 1 times [2022-04-18 15:52:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:19,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769730949] [2022-04-18 15:52:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:19,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:19,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769730949] [2022-04-18 15:52:19,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769730949] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:19,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:19,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840472043] [2022-04-18 15:52:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:19,370 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:19,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:19,374 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 594 [2022-04-18 15:52:19,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 592 transitions, 1323 flow. Second operand has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:19,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:19,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 594 [2022-04-18 15:52:19,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:25,478 INFO L129 PetriNetUnfolder]: 3140/41889 cut-off events. [2022-04-18 15:52:25,479 INFO L130 PetriNetUnfolder]: For 500/567 co-relation queries the response was YES. [2022-04-18 15:52:25,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47299 conditions, 41889 events. 3140/41889 cut-off events. For 500/567 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 594080 event pairs, 726 based on Foata normal form. 0/36590 useless extension candidates. Maximal degree in co-relation 45400. Up to 1659 conditions per place. [2022-04-18 15:52:25,928 INFO L132 encePairwiseOnDemand]: 588/594 looper letters, 13 selfloop transitions, 3 changer transitions 0/594 dead transitions. [2022-04-18 15:52:25,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 594 transitions, 1362 flow [2022-04-18 15:52:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1732 transitions. [2022-04-18 15:52:25,932 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9719416386083053 [2022-04-18 15:52:25,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1732 transitions. [2022-04-18 15:52:25,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1732 transitions. [2022-04-18 15:52:25,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:25,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1732 transitions. [2022-04-18 15:52:25,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 577.3333333333334) internal successors, (1732), 3 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:25,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:25,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:25,942 INFO L186 Difference]: Start difference. First operand has 571 places, 592 transitions, 1323 flow. Second operand 3 states and 1732 transitions. [2022-04-18 15:52:25,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 594 transitions, 1362 flow [2022-04-18 15:52:25,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 594 transitions, 1342 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:25,970 INFO L242 Difference]: Finished difference. Result has 569 places, 592 transitions, 1318 flow [2022-04-18 15:52:25,972 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1318, PETRI_PLACES=569, PETRI_TRANSITIONS=592} [2022-04-18 15:52:25,974 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, -4 predicate places. [2022-04-18 15:52:25,974 INFO L478 AbstractCegarLoop]: Abstraction has has 569 places, 592 transitions, 1318 flow [2022-04-18 15:52:25,975 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:25,975 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:25,975 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:25,976 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:52:25,976 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting loaderErr3ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -219451569, now seen corresponding path program 1 times [2022-04-18 15:52:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:25,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205274354] [2022-04-18 15:52:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:26,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205274354] [2022-04-18 15:52:26,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205274354] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:26,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:26,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245304582] [2022-04-18 15:52:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:26,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:26,028 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 562 out of 594 [2022-04-18 15:52:26,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 592 transitions, 1318 flow. Second operand has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:26,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:26,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 562 of 594 [2022-04-18 15:52:26,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:37,328 INFO L129 PetriNetUnfolder]: 7756/74655 cut-off events. [2022-04-18 15:52:37,329 INFO L130 PetriNetUnfolder]: For 303/305 co-relation queries the response was YES. [2022-04-18 15:52:37,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87244 conditions, 74655 events. 7756/74655 cut-off events. For 303/305 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 1155735 event pairs, 2712 based on Foata normal form. 0/64500 useless extension candidates. Maximal degree in co-relation 43808. Up to 5116 conditions per place. [2022-04-18 15:52:38,084 INFO L132 encePairwiseOnDemand]: 586/594 looper letters, 32 selfloop transitions, 7 changer transitions 0/608 dead transitions. [2022-04-18 15:52:38,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 608 transitions, 1431 flow [2022-04-18 15:52:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:38,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1726 transitions. [2022-04-18 15:52:38,089 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9685746352413019 [2022-04-18 15:52:38,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1726 transitions. [2022-04-18 15:52:38,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1726 transitions. [2022-04-18 15:52:38,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:38,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1726 transitions. [2022-04-18 15:52:38,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 575.3333333333334) internal successors, (1726), 3 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:38,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:38,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:38,098 INFO L186 Difference]: Start difference. First operand has 569 places, 592 transitions, 1318 flow. Second operand 3 states and 1726 transitions. [2022-04-18 15:52:38,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 608 transitions, 1431 flow [2022-04-18 15:52:38,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 608 transitions, 1431 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:52:38,109 INFO L242 Difference]: Finished difference. Result has 573 places, 598 transitions, 1372 flow [2022-04-18 15:52:38,110 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1372, PETRI_PLACES=573, PETRI_TRANSITIONS=598} [2022-04-18 15:52:38,110 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, 0 predicate places. [2022-04-18 15:52:38,110 INFO L478 AbstractCegarLoop]: Abstraction has has 573 places, 598 transitions, 1372 flow [2022-04-18 15:52:38,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:38,111 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:38,112 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:38,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:52:38,112 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting loaderErr4ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -740135920, now seen corresponding path program 1 times [2022-04-18 15:52:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:38,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058946974] [2022-04-18 15:52:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:38,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:38,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058946974] [2022-04-18 15:52:38,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058946974] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:38,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:38,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:38,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056323023] [2022-04-18 15:52:38,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:38,143 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:38,146 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 594 [2022-04-18 15:52:38,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 598 transitions, 1372 flow. Second operand has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:38,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:38,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 594 [2022-04-18 15:52:38,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:43,212 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true, 204#loaderENTRYtrue]) [2022-04-18 15:52:43,212 INFO L384 tUnfolder$Statistics]: this new event has 241 ancestors and is cut-off event [2022-04-18 15:52:43,212 INFO L387 tUnfolder$Statistics]: existing Event has 241 ancestors and is cut-off event [2022-04-18 15:52:43,212 INFO L387 tUnfolder$Statistics]: existing Event has 193 ancestors and is cut-off event [2022-04-18 15:52:43,212 INFO L387 tUnfolder$Statistics]: existing Event has 193 ancestors and is cut-off event [2022-04-18 15:52:44,873 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 315#L720-1true, 384#L748-1true]) [2022-04-18 15:52:44,874 INFO L384 tUnfolder$Statistics]: this new event has 262 ancestors and is cut-off event [2022-04-18 15:52:44,874 INFO L387 tUnfolder$Statistics]: existing Event has 214 ancestors and is cut-off event [2022-04-18 15:52:44,874 INFO L387 tUnfolder$Statistics]: existing Event has 214 ancestors and is cut-off event [2022-04-18 15:52:44,874 INFO L387 tUnfolder$Statistics]: existing Event has 262 ancestors and is cut-off event [2022-04-18 15:52:44,916 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, 373#L720-2true, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:44,916 INFO L384 tUnfolder$Statistics]: this new event has 263 ancestors and is cut-off event [2022-04-18 15:52:44,916 INFO L387 tUnfolder$Statistics]: existing Event has 263 ancestors and is cut-off event [2022-04-18 15:52:44,916 INFO L387 tUnfolder$Statistics]: existing Event has 215 ancestors and is cut-off event [2022-04-18 15:52:44,916 INFO L387 tUnfolder$Statistics]: existing Event has 215 ancestors and is cut-off event [2022-04-18 15:52:45,089 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 509#L721-3true, 384#L748-1true]) [2022-04-18 15:52:45,090 INFO L384 tUnfolder$Statistics]: this new event has 267 ancestors and is cut-off event [2022-04-18 15:52:45,090 INFO L387 tUnfolder$Statistics]: existing Event has 267 ancestors and is cut-off event [2022-04-18 15:52:45,090 INFO L387 tUnfolder$Statistics]: existing Event has 219 ancestors and is cut-off event [2022-04-18 15:52:45,090 INFO L387 tUnfolder$Statistics]: existing Event has 219 ancestors and is cut-off event [2022-04-18 15:52:45,127 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 565#L721-4true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:45,128 INFO L384 tUnfolder$Statistics]: this new event has 268 ancestors and is cut-off event [2022-04-18 15:52:45,128 INFO L387 tUnfolder$Statistics]: existing Event has 268 ancestors and is cut-off event [2022-04-18 15:52:45,131 INFO L387 tUnfolder$Statistics]: existing Event has 220 ancestors and is cut-off event [2022-04-18 15:52:45,131 INFO L387 tUnfolder$Statistics]: existing Event has 220 ancestors and is cut-off event [2022-04-18 15:52:45,203 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, 326#L722-1true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:45,203 INFO L384 tUnfolder$Statistics]: this new event has 270 ancestors and is cut-off event [2022-04-18 15:52:45,203 INFO L387 tUnfolder$Statistics]: existing Event has 222 ancestors and is cut-off event [2022-04-18 15:52:45,203 INFO L387 tUnfolder$Statistics]: existing Event has 270 ancestors and is cut-off event [2022-04-18 15:52:45,203 INFO L387 tUnfolder$Statistics]: existing Event has 222 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][272], [Black: 605#(= |#race~dev_qset~0| 0), 620#true, 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, 526#L722-6true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:45,204 INFO L384 tUnfolder$Statistics]: this new event has 275 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L387 tUnfolder$Statistics]: existing Event has 275 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L387 tUnfolder$Statistics]: existing Event has 227 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L387 tUnfolder$Statistics]: existing Event has 227 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][272], [Black: 605#(= |#race~dev_qset~0| 0), 620#true, 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, 344#L722-5true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:45,204 INFO L384 tUnfolder$Statistics]: this new event has 274 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L387 tUnfolder$Statistics]: existing Event has 274 ancestors and is cut-off event [2022-04-18 15:52:45,204 INFO L387 tUnfolder$Statistics]: existing Event has 226 ancestors and is cut-off event [2022-04-18 15:52:45,205 INFO L387 tUnfolder$Statistics]: existing Event has 226 ancestors and is cut-off event [2022-04-18 15:52:45,347 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [Black: 605#(= |#race~dev_qset~0| 0), 620#true, 323#L781-1true, 418#loaderErr3ASSERT_VIOLATIONDATA_RACEtrue, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:45,348 INFO L384 tUnfolder$Statistics]: this new event has 275 ancestors and is cut-off event [2022-04-18 15:52:45,348 INFO L387 tUnfolder$Statistics]: existing Event has 227 ancestors and is cut-off event [2022-04-18 15:52:45,348 INFO L387 tUnfolder$Statistics]: existing Event has 275 ancestors and is cut-off event [2022-04-18 15:52:45,348 INFO L387 tUnfolder$Statistics]: existing Event has 227 ancestors and is cut-off event [2022-04-18 15:52:45,420 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, 153#L723true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true]) [2022-04-18 15:52:45,421 INFO L384 tUnfolder$Statistics]: this new event has 276 ancestors and is cut-off event [2022-04-18 15:52:45,421 INFO L387 tUnfolder$Statistics]: existing Event has 228 ancestors and is cut-off event [2022-04-18 15:52:45,421 INFO L387 tUnfolder$Statistics]: existing Event has 276 ancestors and is cut-off event [2022-04-18 15:52:45,421 INFO L387 tUnfolder$Statistics]: existing Event has 228 ancestors and is cut-off event [2022-04-18 15:52:45,457 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [Black: 605#(= |#race~dev_qset~0| 0), 620#true, 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 384#L748-1true, 178#L723-1true]) [2022-04-18 15:52:45,457 INFO L384 tUnfolder$Statistics]: this new event has 277 ancestors and is cut-off event [2022-04-18 15:52:45,457 INFO L387 tUnfolder$Statistics]: existing Event has 229 ancestors and is cut-off event [2022-04-18 15:52:45,457 INFO L387 tUnfolder$Statistics]: existing Event has 229 ancestors and is cut-off event [2022-04-18 15:52:45,458 INFO L387 tUnfolder$Statistics]: existing Event has 277 ancestors and is cut-off event [2022-04-18 15:52:45,495 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1626] L781-->L781-1: Formula: (= |v_#race~dev_quantum~0_13| 0) InVars {} OutVars{#race~dev_quantum~0=|v_#race~dev_quantum~0_13|} AuxVars[] AssignedVars[#race~dev_quantum~0][271], [620#true, Black: 605#(= |#race~dev_qset~0| 0), 323#L781-1true, 617#(= |#race~scull_quantum~0| 0), Black: 611#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet8#1| |#race~dev_size~0|), 628#(= |#race~scull_qset~0| 0), 320#L930-4true, thread2Thread1of1ForFork0InUse, Black: 615#true, Black: 622#(= |loaderThread1of1ForFork1_scull_trim_#t~nondet9#1| |#race~dev_quantum~0|), Black: 591#true, 593#(= |#race~i~0| 0), 480#L723-2true, 384#L748-1true]) [2022-04-18 15:52:45,495 INFO L384 tUnfolder$Statistics]: this new event has 278 ancestors and is cut-off event [2022-04-18 15:52:45,495 INFO L387 tUnfolder$Statistics]: existing Event has 230 ancestors and is cut-off event [2022-04-18 15:52:45,495 INFO L387 tUnfolder$Statistics]: existing Event has 230 ancestors and is cut-off event [2022-04-18 15:52:45,495 INFO L387 tUnfolder$Statistics]: existing Event has 278 ancestors and is cut-off event [2022-04-18 15:52:46,973 INFO L129 PetriNetUnfolder]: 4980/63303 cut-off events. [2022-04-18 15:52:46,974 INFO L130 PetriNetUnfolder]: For 540/564 co-relation queries the response was YES. [2022-04-18 15:52:47,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72386 conditions, 63303 events. 4980/63303 cut-off events. For 540/564 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 967780 event pairs, 1240 based on Foata normal form. 2/55486 useless extension candidates. Maximal degree in co-relation 70000. Up to 2153 conditions per place. [2022-04-18 15:52:47,899 INFO L132 encePairwiseOnDemand]: 588/594 looper letters, 13 selfloop transitions, 3 changer transitions 0/600 dead transitions. [2022-04-18 15:52:47,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 600 transitions, 1411 flow [2022-04-18 15:52:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1732 transitions. [2022-04-18 15:52:47,904 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9719416386083053 [2022-04-18 15:52:47,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1732 transitions. [2022-04-18 15:52:47,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1732 transitions. [2022-04-18 15:52:47,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:47,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1732 transitions. [2022-04-18 15:52:47,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 577.3333333333334) internal successors, (1732), 3 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:47,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:47,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:47,913 INFO L186 Difference]: Start difference. First operand has 573 places, 598 transitions, 1372 flow. Second operand 3 states and 1732 transitions. [2022-04-18 15:52:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 600 transitions, 1411 flow [2022-04-18 15:52:47,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 600 transitions, 1397 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:47,940 INFO L242 Difference]: Finished difference. Result has 571 places, 598 transitions, 1373 flow [2022-04-18 15:52:47,940 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1373, PETRI_PLACES=571, PETRI_TRANSITIONS=598} [2022-04-18 15:52:47,941 INFO L335 CegarLoopForPetriNet]: 573 programPoint places, -2 predicate places. [2022-04-18 15:52:47,941 INFO L478 AbstractCegarLoop]: Abstraction has has 571 places, 598 transitions, 1373 flow [2022-04-18 15:52:47,942 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:47,942 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:47,942 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:47,942 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:52:47,943 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting loaderErr5ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-04-18 15:52:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 136687699, now seen corresponding path program 1 times [2022-04-18 15:52:47,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564455038] [2022-04-18 15:52:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:52:47,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:47,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564455038] [2022-04-18 15:52:47,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564455038] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:47,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:47,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915435281] [2022-04-18 15:52:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:47,980 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:47,983 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 553 out of 594 [2022-04-18 15:52:47,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 598 transitions, 1373 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:47,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:47,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 553 of 594 [2022-04-18 15:52:47,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand