./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread/stack-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack-2.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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 17:46:58,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 17:46:58,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 17:46:58,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 17:46:58,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 17:46:58,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 17:46:58,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 17:46:58,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 17:46:58,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 17:46:58,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 17:46:58,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 17:46:58,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 17:46:58,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 17:46:58,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 17:46:58,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 17:46:58,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 17:46:58,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 17:46:58,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 17:46:58,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 17:46:58,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 17:46:58,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 17:46:58,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 17:46:58,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 17:46:58,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 17:46:58,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 17:46:58,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 17:46:58,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 17:46:58,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 17:46:58,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 17:46:58,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 17:46:58,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 17:46:58,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 17:46:58,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 17:46:58,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 17:46:58,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 17:46:58,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 17:46:58,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 17:46:58,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 17:46:58,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 17:46:58,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 17:46:58,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 17:46:58,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 17:46:58,845 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 17:46:58,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 17:46:58,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 17:46:58,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 17:46:58,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 17:46:58,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 17:46:58,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 17:46:58,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 17:46:58,848 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 17:46:58,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 17:46:58,849 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 17:46:58,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 17:46:58,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 17:46:58,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 17:46:58,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 17:46:58,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 17:46:58,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 17:46:58,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 17:46:58,850 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 17:46:58,850 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 17:46:58,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 17:46:58,851 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 17:46:58,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 17:46:58,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 17:46:58,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 17:46:58,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 17:46:58,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:46:58,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 17:46:58,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 17:46:58,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 17:46:58,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 17:46:58,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 17:46:58,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 17:46:58,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 17:46:58,853 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 17:46:58,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 17:46:58,854 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 17:46:58,854 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 17:46:59,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 17:46:59,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 17:46:59,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 17:46:59,185 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 17:46:59,186 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 17:46:59,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-28 17:47:00,514 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 17:47:00,815 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 17:47:00,816 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-28 17:47:00,834 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ca9ee6b/888af434394a4f09b8dcf425b7edff52/FLAGf9ae8ed4f [2023-08-28 17:47:00,849 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ca9ee6b/888af434394a4f09b8dcf425b7edff52 [2023-08-28 17:47:00,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 17:47:00,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 17:47:00,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 17:47:00,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 17:47:00,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 17:47:00,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:47:00" (1/1) ... [2023-08-28 17:47:00,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3e7e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:00, skipping insertion in model container [2023-08-28 17:47:00,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:47:00" (1/1) ... [2023-08-28 17:47:00,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 17:47:00,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 17:47:01,218 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-08-28 17:47:01,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:47:01,277 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 17:47:01,314 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-08-28 17:47:01,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:47:01,389 INFO L208 MainTranslator]: Completed translation [2023-08-28 17:47:01,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01 WrapperNode [2023-08-28 17:47:01,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 17:47:01,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 17:47:01,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 17:47:01,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 17:47:01,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,436 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 208 [2023-08-28 17:47:01,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 17:47:01,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 17:47:01,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 17:47:01,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 17:47:01,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 17:47:01,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 17:47:01,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 17:47:01,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 17:47:01,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (1/1) ... [2023-08-28 17:47:01,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:47:01,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:47:01,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-28 17:47:01,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-28 17:47:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-28 17:47:01,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-28 17:47:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-28 17:47:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-28 17:47:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 17:47:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 17:47:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-28 17:47:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 17:47:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-28 17:47:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 17:47:01,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 17:47:01,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 17:47:01,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 17:47:01,565 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 17:47:01,685 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 17:47:01,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 17:47:02,086 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 17:47:02,095 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 17:47:02,096 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 17:47:02,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:47:02 BoogieIcfgContainer [2023-08-28 17:47:02,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 17:47:02,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 17:47:02,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 17:47:02,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 17:47:02,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:47:00" (1/3) ... [2023-08-28 17:47:02,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd5e64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:47:02, skipping insertion in model container [2023-08-28 17:47:02,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:47:01" (2/3) ... [2023-08-28 17:47:02,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd5e64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:47:02, skipping insertion in model container [2023-08-28 17:47:02,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:47:02" (3/3) ... [2023-08-28 17:47:02,109 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-28 17:47:02,117 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 17:47:02,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 17:47:02,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-28 17:47:02,126 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 17:47:02,226 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-28 17:47:02,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 222 transitions, 460 flow [2023-08-28 17:47:02,358 INFO L130 PetriNetUnfolder]: 10/220 cut-off events. [2023-08-28 17:47:02,359 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:47:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 10/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 548 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 174. Up to 3 conditions per place. [2023-08-28 17:47:02,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 222 transitions, 460 flow [2023-08-28 17:47:02,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 211 transitions, 431 flow [2023-08-28 17:47:02,382 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:47:02,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 211 transitions, 431 flow [2023-08-28 17:47:02,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 211 transitions, 431 flow [2023-08-28 17:47:02,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 211 transitions, 431 flow [2023-08-28 17:47:02,462 INFO L130 PetriNetUnfolder]: 10/211 cut-off events. [2023-08-28 17:47:02,463 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-28 17:47:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 211 events. 10/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 493 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 174. Up to 3 conditions per place. [2023-08-28 17:47:02,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 17082 [2023-08-28 17:47:06,114 INFO L134 LiptonReduction]: Checked pairs total: 62246 [2023-08-28 17:47:06,115 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-28 17:47:06,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:47:06,133 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56cdf280, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:47:06,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-28 17:47:06,136 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-28 17:47:06,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:47:06,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:06,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 17:47:06,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:06,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1384946515, now seen corresponding path program 1 times [2023-08-28 17:47:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305348741] [2023-08-28 17:47:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:06,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:06,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:06,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305348741] [2023-08-28 17:47:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305348741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:06,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:47:06,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328822534] [2023-08-28 17:47:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:47:06,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:06,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:47:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:47:06,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 368 [2023-08-28 17:47:06,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:06,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:06,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 368 [2023-08-28 17:47:06,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:06,953 INFO L130 PetriNetUnfolder]: 1926/4094 cut-off events. [2023-08-28 17:47:06,954 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-08-28 17:47:06,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7457 conditions, 4094 events. 1926/4094 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 25274 event pairs, 614 based on Foata normal form. 0/3725 useless extension candidates. Maximal degree in co-relation 6946. Up to 2252 conditions per place. [2023-08-28 17:47:06,979 INFO L137 encePairwiseOnDemand]: 348/368 looper letters, 82 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2023-08-28 17:47:06,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 463 flow [2023-08-28 17:47:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:47:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:47:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-08-28 17:47:06,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114130434782609 [2023-08-28 17:47:06,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-08-28 17:47:06,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-08-28 17:47:07,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:07,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-08-28 17:47:07,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,018 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 177 flow. Second operand 3 states and 675 transitions. [2023-08-28 17:47:07,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 463 flow [2023-08-28 17:47:07,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 128 transitions, 455 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-28 17:47:07,027 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 296 flow [2023-08-28 17:47:07,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2023-08-28 17:47:07,032 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-28 17:47:07,032 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 296 flow [2023-08-28 17:47:07,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:07,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:07,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 17:47:07,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:07,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash 814886425, now seen corresponding path program 1 times [2023-08-28 17:47:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:07,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756770677] [2023-08-28 17:47:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:07,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:07,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756770677] [2023-08-28 17:47:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756770677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:07,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:07,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:47:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227990133] [2023-08-28 17:47:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:07,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:47:07,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:47:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:47:07,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 368 [2023-08-28 17:47:07,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:07,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 368 [2023-08-28 17:47:07,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:07,840 INFO L130 PetriNetUnfolder]: 2930/6562 cut-off events. [2023-08-28 17:47:07,841 INFO L131 PetriNetUnfolder]: For 984/1034 co-relation queries the response was YES. [2023-08-28 17:47:07,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12988 conditions, 6562 events. 2930/6562 cut-off events. For 984/1034 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 49018 event pairs, 914 based on Foata normal form. 0/5979 useless extension candidates. Maximal degree in co-relation 12399. Up to 2554 conditions per place. [2023-08-28 17:47:07,884 INFO L137 encePairwiseOnDemand]: 364/368 looper letters, 85 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2023-08-28 17:47:07,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 139 transitions, 591 flow [2023-08-28 17:47:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:47:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:47:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-28 17:47:07,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6322463768115942 [2023-08-28 17:47:07,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-28 17:47:07,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-28 17:47:07,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:07,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-28 17:47:07,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,893 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 296 flow. Second operand 3 states and 698 transitions. [2023-08-28 17:47:07,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 139 transitions, 591 flow [2023-08-28 17:47:07,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:47:07,905 INFO L231 Difference]: Finished difference. Result has 89 places, 101 transitions, 294 flow [2023-08-28 17:47:07,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=89, PETRI_TRANSITIONS=101} [2023-08-28 17:47:07,906 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-08-28 17:47:07,906 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 101 transitions, 294 flow [2023-08-28 17:47:07,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:07,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:07,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:07,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 17:47:07,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:07,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:07,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1235453056, now seen corresponding path program 1 times [2023-08-28 17:47:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808194398] [2023-08-28 17:47:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:07,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808194398] [2023-08-28 17:47:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808194398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:08,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:08,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 17:47:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141130798] [2023-08-28 17:47:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 17:47:08,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 17:47:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 17:47:08,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 368 [2023-08-28 17:47:08,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 101 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:08,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:08,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 368 [2023-08-28 17:47:08,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:11,926 INFO L130 PetriNetUnfolder]: 23094/41935 cut-off events. [2023-08-28 17:47:11,927 INFO L131 PetriNetUnfolder]: For 5364/5824 co-relation queries the response was YES. [2023-08-28 17:47:12,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86135 conditions, 41935 events. 23094/41935 cut-off events. For 5364/5824 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 363583 event pairs, 6363 based on Foata normal form. 18/37511 useless extension candidates. Maximal degree in co-relation 84880. Up to 19919 conditions per place. [2023-08-28 17:47:12,159 INFO L137 encePairwiseOnDemand]: 358/368 looper letters, 203 selfloop transitions, 21 changer transitions 0/271 dead transitions. [2023-08-28 17:47:12,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 271 transitions, 1203 flow [2023-08-28 17:47:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 17:47:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 17:47:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1378 transitions. [2023-08-28 17:47:12,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6240942028985508 [2023-08-28 17:47:12,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1378 transitions. [2023-08-28 17:47:12,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1378 transitions. [2023-08-28 17:47:12,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:12,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1378 transitions. [2023-08-28 17:47:12,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:12,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:12,172 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:12,172 INFO L175 Difference]: Start difference. First operand has 89 places, 101 transitions, 294 flow. Second operand 6 states and 1378 transitions. [2023-08-28 17:47:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 271 transitions, 1203 flow [2023-08-28 17:47:12,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 271 transitions, 1189 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:47:12,184 INFO L231 Difference]: Finished difference. Result has 97 places, 121 transitions, 430 flow [2023-08-28 17:47:12,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=430, PETRI_PLACES=97, PETRI_TRANSITIONS=121} [2023-08-28 17:47:12,186 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2023-08-28 17:47:12,186 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 121 transitions, 430 flow [2023-08-28 17:47:12,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:12,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:12,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:12,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 17:47:12,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:12,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1210008494, now seen corresponding path program 1 times [2023-08-28 17:47:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108507689] [2023-08-28 17:47:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:12,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:12,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108507689] [2023-08-28 17:47:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108507689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:47:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473626144] [2023-08-28 17:47:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:12,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:47:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:47:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:47:12,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 368 [2023-08-28 17:47:12,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 121 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:12,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:12,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 368 [2023-08-28 17:47:12,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:14,288 INFO L130 PetriNetUnfolder]: 10717/27643 cut-off events. [2023-08-28 17:47:14,289 INFO L131 PetriNetUnfolder]: For 3655/3957 co-relation queries the response was YES. [2023-08-28 17:47:14,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56595 conditions, 27643 events. 10717/27643 cut-off events. For 3655/3957 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 298003 event pairs, 4049 based on Foata normal form. 113/25382 useless extension candidates. Maximal degree in co-relation 55997. Up to 12361 conditions per place. [2023-08-28 17:47:14,480 INFO L137 encePairwiseOnDemand]: 363/368 looper letters, 80 selfloop transitions, 3 changer transitions 0/154 dead transitions. [2023-08-28 17:47:14,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 697 flow [2023-08-28 17:47:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:47:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:47:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-08-28 17:47:14,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6231884057971014 [2023-08-28 17:47:14,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-08-28 17:47:14,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-08-28 17:47:14,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:14,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-08-28 17:47:14,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:14,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:14,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:14,495 INFO L175 Difference]: Start difference. First operand has 97 places, 121 transitions, 430 flow. Second operand 3 states and 688 transitions. [2023-08-28 17:47:14,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 697 flow [2023-08-28 17:47:14,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:47:14,523 INFO L231 Difference]: Finished difference. Result has 101 places, 123 transitions, 454 flow [2023-08-28 17:47:14,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=101, PETRI_TRANSITIONS=123} [2023-08-28 17:47:14,525 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2023-08-28 17:47:14,525 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 123 transitions, 454 flow [2023-08-28 17:47:14,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:14,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:14,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:14,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 17:47:14,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:14,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1235946553, now seen corresponding path program 1 times [2023-08-28 17:47:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531641645] [2023-08-28 17:47:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:14,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:14,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531641645] [2023-08-28 17:47:14,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531641645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:14,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:14,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 17:47:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737627436] [2023-08-28 17:47:14,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:14,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 17:47:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 17:47:14,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 17:47:14,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 368 [2023-08-28 17:47:14,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 123 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:14,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:14,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 368 [2023-08-28 17:47:14,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:19,827 INFO L130 PetriNetUnfolder]: 33276/61656 cut-off events. [2023-08-28 17:47:19,828 INFO L131 PetriNetUnfolder]: For 34209/34814 co-relation queries the response was YES. [2023-08-28 17:47:19,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154666 conditions, 61656 events. 33276/61656 cut-off events. For 34209/34814 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 554187 event pairs, 17213 based on Foata normal form. 0/57245 useless extension candidates. Maximal degree in co-relation 153505. Up to 47454 conditions per place. [2023-08-28 17:47:20,181 INFO L137 encePairwiseOnDemand]: 354/368 looper letters, 160 selfloop transitions, 44 changer transitions 0/246 dead transitions. [2023-08-28 17:47:20,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 246 transitions, 1246 flow [2023-08-28 17:47:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 17:47:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 17:47:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1288 transitions. [2023-08-28 17:47:20,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-28 17:47:20,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1288 transitions. [2023-08-28 17:47:20,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1288 transitions. [2023-08-28 17:47:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:20,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1288 transitions. [2023-08-28 17:47:20,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:20,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:20,205 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:20,205 INFO L175 Difference]: Start difference. First operand has 101 places, 123 transitions, 454 flow. Second operand 6 states and 1288 transitions. [2023-08-28 17:47:20,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 246 transitions, 1246 flow [2023-08-28 17:47:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 246 transitions, 1232 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:47:20,595 INFO L231 Difference]: Finished difference. Result has 108 places, 162 transitions, 754 flow [2023-08-28 17:47:20,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=108, PETRI_TRANSITIONS=162} [2023-08-28 17:47:20,595 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 22 predicate places. [2023-08-28 17:47:20,596 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 162 transitions, 754 flow [2023-08-28 17:47:20,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:20,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:20,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:20,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 17:47:20,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:20,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:20,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1168893095, now seen corresponding path program 1 times [2023-08-28 17:47:20,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:20,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034654893] [2023-08-28 17:47:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:20,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034654893] [2023-08-28 17:47:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034654893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:20,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:20,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:47:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829118981] [2023-08-28 17:47:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:20,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:47:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:47:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:47:20,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 368 [2023-08-28 17:47:20,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 162 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:20,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:20,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 368 [2023-08-28 17:47:20,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:24,349 INFO L130 PetriNetUnfolder]: 18376/44283 cut-off events. [2023-08-28 17:47:24,349 INFO L131 PetriNetUnfolder]: For 18993/20588 co-relation queries the response was YES. [2023-08-28 17:47:24,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105788 conditions, 44283 events. 18376/44283 cut-off events. For 18993/20588 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 484067 event pairs, 7154 based on Foata normal form. 490/41372 useless extension candidates. Maximal degree in co-relation 100027. Up to 20278 conditions per place. [2023-08-28 17:47:24,667 INFO L137 encePairwiseOnDemand]: 365/368 looper letters, 92 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2023-08-28 17:47:24,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 204 transitions, 1098 flow [2023-08-28 17:47:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:47:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:47:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-08-28 17:47:24,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6259057971014492 [2023-08-28 17:47:24,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-08-28 17:47:24,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-08-28 17:47:24,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:24,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-08-28 17:47:24,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:24,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:24,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:24,675 INFO L175 Difference]: Start difference. First operand has 108 places, 162 transitions, 754 flow. Second operand 3 states and 691 transitions. [2023-08-28 17:47:24,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 204 transitions, 1098 flow [2023-08-28 17:47:25,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 204 transitions, 1074 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-28 17:47:25,133 INFO L231 Difference]: Finished difference. Result has 111 places, 163 transitions, 742 flow [2023-08-28 17:47:25,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=111, PETRI_TRANSITIONS=163} [2023-08-28 17:47:25,134 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 25 predicate places. [2023-08-28 17:47:25,135 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 163 transitions, 742 flow [2023-08-28 17:47:25,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:25,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:25,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:25,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 17:47:25,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:25,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 674390040, now seen corresponding path program 1 times [2023-08-28 17:47:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:25,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064216061] [2023-08-28 17:47:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:25,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:25,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:25,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064216061] [2023-08-28 17:47:25,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064216061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:25,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:25,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-28 17:47:25,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661674600] [2023-08-28 17:47:25,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:25,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-28 17:47:25,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-28 17:47:25,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-28 17:47:26,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 368 [2023-08-28 17:47:26,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 163 transitions, 742 flow. Second operand has 9 states, 9 states have (on average 196.77777777777777) internal successors, (1771), 9 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:26,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:26,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 368 [2023-08-28 17:47:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:47:40,456 INFO L130 PetriNetUnfolder]: 91276/166025 cut-off events. [2023-08-28 17:47:40,456 INFO L131 PetriNetUnfolder]: For 134720/141613 co-relation queries the response was YES. [2023-08-28 17:47:41,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466088 conditions, 166025 events. 91276/166025 cut-off events. For 134720/141613 co-relation queries the response was YES. Maximal size of possible extension queue 3581. Compared 1709374 event pairs, 23031 based on Foata normal form. 4111/160360 useless extension candidates. Maximal degree in co-relation 463897. Up to 41212 conditions per place. [2023-08-28 17:47:41,600 INFO L137 encePairwiseOnDemand]: 356/368 looper letters, 370 selfloop transitions, 55 changer transitions 0/488 dead transitions. [2023-08-28 17:47:41,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 488 transitions, 2929 flow [2023-08-28 17:47:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-28 17:47:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-28 17:47:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2019 transitions. [2023-08-28 17:47:41,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096014492753623 [2023-08-28 17:47:41,606 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2019 transitions. [2023-08-28 17:47:41,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2019 transitions. [2023-08-28 17:47:41,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:47:41,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2019 transitions. [2023-08-28 17:47:41,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.33333333333334) internal successors, (2019), 9 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:41,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:41,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:41,618 INFO L175 Difference]: Start difference. First operand has 111 places, 163 transitions, 742 flow. Second operand 9 states and 2019 transitions. [2023-08-28 17:47:41,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 488 transitions, 2929 flow [2023-08-28 17:47:46,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 488 transitions, 2919 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:47:46,840 INFO L231 Difference]: Finished difference. Result has 124 places, 203 transitions, 1256 flow [2023-08-28 17:47:46,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=124, PETRI_TRANSITIONS=203} [2023-08-28 17:47:46,841 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 38 predicate places. [2023-08-28 17:47:46,841 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 203 transitions, 1256 flow [2023-08-28 17:47:46,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 196.77777777777777) internal successors, (1771), 9 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:46,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:47:46,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:47:46,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 17:47:46,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:47:46,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:47:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash -456066990, now seen corresponding path program 2 times [2023-08-28 17:47:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:47:46,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080498734] [2023-08-28 17:47:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:47:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:47:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:47:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:47:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:47:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080498734] [2023-08-28 17:47:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080498734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:47:47,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:47:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-28 17:47:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666239519] [2023-08-28 17:47:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:47:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-28 17:47:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:47:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-28 17:47:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-28 17:47:47,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 368 [2023-08-28 17:47:47,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 203 transitions, 1256 flow. Second operand has 9 states, 9 states have (on average 197.77777777777777) internal successors, (1780), 9 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:47:47,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:47:47,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 368 [2023-08-28 17:47:47,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:48:01,552 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([681] L950-4-->L950-6: Formula: (= |v_t2Thread1of1ForFork1_dec_top_#t~nondet34#1_17| |v_#race~top~0_27|) InVars {} OutVars{#race~top~0=|v_#race~top~0_27|, t2Thread1of1ForFork1_dec_top_#t~nondet34#1=|v_t2Thread1of1ForFork1_dec_top_#t~nondet34#1_17|} AuxVars[] AssignedVars[#race~top~0, t2Thread1of1ForFork1_dec_top_#t~nondet34#1][355], [Black: 255#(and (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset| 1))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|)))), 189#L1025-6true, Black: 257#(and (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset| 1))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ 3 (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ 2 (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|)))), Black: 254#(= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))), 314#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (= 3 |~#arr~0.base|)), Black: 256#(and (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset| 1))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ 2 (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|)))), Black: 265#(= 0 |t1Thread1of1ForFork0_~i~0#1|), 239#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), t2Thread1of1ForFork1InUse, Black: 278#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), 120#L946-2true, Black: 271#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 224#(= |#race~top~0| 0), 9#L950-6true, Black: 286#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 280#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 284#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 230#(= |#race~flag~0| 0), 252#true, Black: 236#(= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0), Black: 238#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), Black: 234#true, Black: 237#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), 282#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 248#(= ~top~0 0)]) [2023-08-28 17:48:01,553 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2023-08-28 17:48:01,553 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2023-08-28 17:48:01,553 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2023-08-28 17:48:01,553 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2023-08-28 17:48:06,584 INFO L130 PetriNetUnfolder]: 111377/198547 cut-off events. [2023-08-28 17:48:06,584 INFO L131 PetriNetUnfolder]: For 366871/376916 co-relation queries the response was YES. [2023-08-28 17:48:07,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647178 conditions, 198547 events. 111377/198547 cut-off events. For 366871/376916 co-relation queries the response was YES. Maximal size of possible extension queue 3758. Compared 2012814 event pairs, 18910 based on Foata normal form. 8520/196176 useless extension candidates. Maximal degree in co-relation 645614. Up to 54967 conditions per place. [2023-08-28 17:48:08,370 INFO L137 encePairwiseOnDemand]: 360/368 looper letters, 354 selfloop transitions, 53 changer transitions 0/470 dead transitions. [2023-08-28 17:48:08,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 470 transitions, 3359 flow [2023-08-28 17:48:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-28 17:48:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-28 17:48:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1977 transitions. [2023-08-28 17:48:08,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969202898550725 [2023-08-28 17:48:08,376 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1977 transitions. [2023-08-28 17:48:08,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1977 transitions. [2023-08-28 17:48:08,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:48:08,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1977 transitions. [2023-08-28 17:48:08,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:48:08,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:48:08,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:48:08,387 INFO L175 Difference]: Start difference. First operand has 124 places, 203 transitions, 1256 flow. Second operand 9 states and 1977 transitions. [2023-08-28 17:48:08,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 470 transitions, 3359 flow [2023-08-28 17:49:28,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 470 transitions, 3348 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-28 17:49:28,114 INFO L231 Difference]: Finished difference. Result has 138 places, 246 transitions, 1907 flow [2023-08-28 17:49:28,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1907, PETRI_PLACES=138, PETRI_TRANSITIONS=246} [2023-08-28 17:49:28,115 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 52 predicate places. [2023-08-28 17:49:28,116 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 246 transitions, 1907 flow [2023-08-28 17:49:28,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 197.77777777777777) internal successors, (1780), 9 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:49:28,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:49:28,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:49:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 17:49:28,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:49:28,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:49:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1772551212, now seen corresponding path program 1 times [2023-08-28 17:49:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:49:28,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400395912] [2023-08-28 17:49:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:49:28,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:49:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:49:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:49:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:49:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400395912] [2023-08-28 17:49:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400395912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:49:28,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:49:28,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-28 17:49:28,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276245095] [2023-08-28 17:49:28,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:49:28,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-28 17:49:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:49:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-28 17:49:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-28 17:49:28,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 368 [2023-08-28 17:49:28,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 246 transitions, 1907 flow. Second operand has 9 states, 9 states have (on average 182.77777777777777) internal successors, (1645), 9 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:49:28,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:49:28,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 368 [2023-08-28 17:49:28,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:49:49,634 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([797] L995-2-->L962-1: Formula: (let ((.cse0 (mod |v_t1Thread1of1ForFork0_~tmp~0#1_In_1| 4294967296))) (and (= (ite (< .cse0 5) 1 0) |v_t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_Out_2|) (= |v_t1Thread1of1ForFork0_push_#in~stack#1.offset_Out_2| |v_~#arr~0.offset_In_1|) (= |v_~#arr~0.base_In_1| |v_t1Thread1of1ForFork0_push_#in~stack#1.base_Out_2|) (= (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))) |v_t1Thread1of1ForFork0_push_#in~x#1_Out_2|) (= |v_t1Thread1of1ForFork0_assume_abort_if_not_~cond#1_Out_2| |v_t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_Out_2|) (= |v_t1Thread1of1ForFork0_push_~x#1_Out_2| |v_t1Thread1of1ForFork0_push_#in~x#1_Out_2|) (= |v_t1Thread1of1ForFork0_push_~stack#1.base_Out_2| |v_t1Thread1of1ForFork0_push_#in~stack#1.base_Out_2|) (= |v_t1Thread1of1ForFork0_push_#in~stack#1.offset_Out_2| |v_t1Thread1of1ForFork0_push_~stack#1.offset_Out_2|) (= 0 |v_#race~top~0_Out_2|) (not (= |v_t1Thread1of1ForFork0_assume_abort_if_not_~cond#1_Out_2| 0)))) InVars {~#arr~0.offset=|v_~#arr~0.offset_In_1|, ~#arr~0.base=|v_~#arr~0.base_In_1|, t1Thread1of1ForFork0_~tmp~0#1=|v_t1Thread1of1ForFork0_~tmp~0#1_In_1|} OutVars{t1Thread1of1ForFork0_push_#t~nondet35#1=|v_t1Thread1of1ForFork0_push_#t~nondet35#1_Out_2|, ~#arr~0.offset=|v_~#arr~0.offset_In_1|, t1Thread1of1ForFork0_push_~x#1=|v_t1Thread1of1ForFork0_push_~x#1_Out_2|, t1Thread1of1ForFork0_push_#t~nondet37#1=|v_t1Thread1of1ForFork0_push_#t~nondet37#1_Out_2|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_Out_2|, t1Thread1of1ForFork0_push_#in~stack#1.offset=|v_t1Thread1of1ForFork0_push_#in~stack#1.offset_Out_2|, t1Thread1of1ForFork0_#t~nondet44#1=|v_t1Thread1of1ForFork0_#t~nondet44#1_Out_2|, t1Thread1of1ForFork0_push_#in~x#1=|v_t1Thread1of1ForFork0_push_#in~x#1_Out_2|, t1Thread1of1ForFork0_push_#in~stack#1.base=|v_t1Thread1of1ForFork0_push_#in~stack#1.base_Out_2|, t1Thread1of1ForFork0_push_#res#1=|v_t1Thread1of1ForFork0_push_#res#1_Out_2|, #race~top~0=|v_#race~top~0_Out_2|, t1Thread1of1ForFork0_~tmp~0#1=|v_t1Thread1of1ForFork0_~tmp~0#1_In_1|, t1Thread1of1ForFork0_push_#t~ret36#1=|v_t1Thread1of1ForFork0_push_#t~ret36#1_Out_2|, t1Thread1of1ForFork0_push_~stack#1.base=|v_t1Thread1of1ForFork0_push_~stack#1.base_Out_2|, t1Thread1of1ForFork0_push_~stack#1.offset=|v_t1Thread1of1ForFork0_push_~stack#1.offset_Out_2|, ~#arr~0.base=|v_~#arr~0.base_In_1|, t1Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_t1Thread1of1ForFork0_assume_abort_if_not_~cond#1_Out_2|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#t~nondet35#1, t1Thread1of1ForFork0_push_~x#1, t1Thread1of1ForFork0_push_#t~nondet37#1, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, t1Thread1of1ForFork0_push_#in~stack#1.offset, t1Thread1of1ForFork0_#t~nondet44#1, t1Thread1of1ForFork0_push_#in~x#1, t1Thread1of1ForFork0_push_#in~stack#1.base, t1Thread1of1ForFork0_push_#res#1, #race~top~0, t1Thread1of1ForFork0_push_#t~ret36#1, t1Thread1of1ForFork0_push_~stack#1.base, t1Thread1of1ForFork0_push_~stack#1.offset, t1Thread1of1ForFork0_assume_abort_if_not_~cond#1][414], [Black: 312#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (= 3 |~#arr~0.base|)), Black: 296#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= 3 |~#arr~0.base|)), Black: 306#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= 3 |~#arr~0.base|)), 24#L962-1true, Black: 255#(and (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset| 1))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|)))), 189#L1025-6true, 323#true, Black: 257#(and (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset| 1))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ 3 (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ 2 (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|)))), Black: 254#(= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))), 314#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (= 3 |~#arr~0.base|)), Black: 256#(and (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset| 1))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|))) (= |t1Thread1of1ForFork0_push_#t~nondet37#1| (select (select |#race| |t1Thread1of1ForFork0_push_~stack#1.base|) (+ 2 (* |t1Thread1of1ForFork0_push_#t~ret36#1| 4) |t1Thread1of1ForFork0_push_~stack#1.offset|)))), Black: 265#(= 0 |t1Thread1of1ForFork0_~i~0#1|), 239#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), t2Thread1of1ForFork1InUse, Black: 278#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 271#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 282#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 222#true, Black: 280#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 284#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), Black: 230#(= |#race~flag~0| 0), 286#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (not (= |ULTIMATE.start_main_~#id1~0#1.base| |~#arr~0.base|))), 252#true, Black: 236#(= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0), Black: 238#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), Black: 234#true, Black: 237#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), 78#L950-2true, Black: 248#(= ~top~0 0), Black: 310#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (= 3 |~#arr~0.base|)), Black: 308#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0) (= 3 |~#arr~0.base|)), Black: 304#(and (not (= 3 |ULTIMATE.start_main_~#id1~0#1.base|)) (not (= |t1Thread1of1ForFork0_push_~stack#1.base| |ULTIMATE.start_main_~#id1~0#1.base|)) (= 3 |~#arr~0.base|))]) [2023-08-28 17:49:49,635 INFO L383 tUnfolder$Statistics]: this new event has 69 ancestors and is cut-off event [2023-08-28 17:49:49,635 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2023-08-28 17:49:49,636 INFO L386 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2023-08-28 17:49:49,636 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2023-08-28 17:49:53,296 INFO L130 PetriNetUnfolder]: 118637/217698 cut-off events. [2023-08-28 17:49:53,296 INFO L131 PetriNetUnfolder]: For 718148/720337 co-relation queries the response was YES. [2023-08-28 17:49:54,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769399 conditions, 217698 events. 118637/217698 cut-off events. For 718148/720337 co-relation queries the response was YES. Maximal size of possible extension queue 4090. Compared 2277555 event pairs, 37512 based on Foata normal form. 378/206060 useless extension candidates. Maximal degree in co-relation 767828. Up to 143275 conditions per place. [2023-08-28 17:49:55,413 INFO L137 encePairwiseOnDemand]: 359/368 looper letters, 396 selfloop transitions, 56 changer transitions 0/502 dead transitions. [2023-08-28 17:49:55,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 502 transitions, 4700 flow [2023-08-28 17:49:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-28 17:49:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-28 17:49:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1825 transitions. [2023-08-28 17:49:55,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510265700483091 [2023-08-28 17:49:55,418 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1825 transitions. [2023-08-28 17:49:55,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1825 transitions. [2023-08-28 17:49:55,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:49:55,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1825 transitions. [2023-08-28 17:49:55,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:49:55,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:49:55,428 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:49:55,428 INFO L175 Difference]: Start difference. First operand has 138 places, 246 transitions, 1907 flow. Second operand 9 states and 1825 transitions. [2023-08-28 17:49:55,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 502 transitions, 4700 flow [2023-08-28 17:50:51,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 502 transitions, 4695 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-28 17:50:51,188 INFO L231 Difference]: Finished difference. Result has 151 places, 295 transitions, 2686 flow [2023-08-28 17:50:51,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2686, PETRI_PLACES=151, PETRI_TRANSITIONS=295} [2023-08-28 17:50:51,188 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 65 predicate places. [2023-08-28 17:50:51,189 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 295 transitions, 2686 flow [2023-08-28 17:50:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 182.77777777777777) internal successors, (1645), 9 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:50:51,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:50:51,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:50:51,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 17:50:51,190 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-08-28 17:50:51,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:50:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1537194966, now seen corresponding path program 3 times [2023-08-28 17:50:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:50:51,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356568100] [2023-08-28 17:50:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:50:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:50:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:50:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:50:51,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:50:51,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356568100] [2023-08-28 17:50:51,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356568100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:50:51,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:50:51,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-28 17:50:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762259454] [2023-08-28 17:50:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:50:51,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-28 17:50:51,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:50:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-28 17:50:51,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-28 17:50:52,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 368 [2023-08-28 17:50:52,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 295 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 191.6) internal successors, (1916), 10 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:50:52,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:50:52,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 368 [2023-08-28 17:50:52,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand