./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --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 18:02:02,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 18:02:02,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 18:02:02,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 18:02:02,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 18:02:02,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 18:02:02,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 18:02:02,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 18:02:02,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 18:02:02,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 18:02:02,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 18:02:02,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 18:02:02,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 18:02:02,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 18:02:02,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 18:02:02,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 18:02:02,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 18:02:02,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 18:02:02,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 18:02:02,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 18:02:02,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 18:02:02,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 18:02:02,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 18:02:02,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 18:02:02,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 18:02:02,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 18:02:02,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 18:02:02,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 18:02:02,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 18:02:02,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 18:02:02,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 18:02:02,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 18:02:02,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 18:02:02,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 18:02:02,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 18:02:02,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 18:02:02,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 18:02:02,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 18:02:02,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 18:02:02,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 18:02:02,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 18:02:02,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 18:02:02,661 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 18:02:02,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 18:02:02,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 18:02:02,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 18:02:02,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 18:02:02,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 18:02:02,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 18:02:02,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 18:02:02,668 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 18:02:02,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 18:02:02,669 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 18:02:02,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 18:02:02,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 18:02:02,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 18:02:02,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 18:02:02,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 18:02:02,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 18:02:02,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 18:02:02,671 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 18:02:02,671 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 18:02:02,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 18:02:02,671 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 18:02:02,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 18:02:02,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 18:02:02,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 18:02:02,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 18:02:02,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:02:02,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 18:02:02,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 18:02:02,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 18:02:02,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 18:02:02,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 18:02:02,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 18:02:02,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 18:02:02,674 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 18:02:02,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 18:02:02,674 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 18:02:02,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 18:02:02,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 18:02:03,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 18:02:03,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 18:02:03,006 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 18:02:03,006 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 18:02:03,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-28 18:02:04,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 18:02:04,415 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 18:02:04,415 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-28 18:02:04,424 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2b1f565/f0a16b89bb8d4e0d867db92b84bb0ae3/FLAGaf6cafb9b [2023-08-28 18:02:04,739 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2b1f565/f0a16b89bb8d4e0d867db92b84bb0ae3 [2023-08-28 18:02:04,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 18:02:04,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 18:02:04,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 18:02:04,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 18:02:04,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 18:02:04,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:02:04" (1/1) ... [2023-08-28 18:02:04,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6220b4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:04, skipping insertion in model container [2023-08-28 18:02:04,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:02:04" (1/1) ... [2023-08-28 18:02:04,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 18:02:04,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 18:02:05,073 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-08-28 18:02:05,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:02:05,089 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 18:02:05,128 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-08-28 18:02:05,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:02:05,201 INFO L208 MainTranslator]: Completed translation [2023-08-28 18:02:05,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05 WrapperNode [2023-08-28 18:02:05,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 18:02:05,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 18:02:05,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 18:02:05,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 18:02:05,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,263 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2023-08-28 18:02:05,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 18:02:05,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 18:02:05,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 18:02:05,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 18:02:05,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 18:02:05,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 18:02:05,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 18:02:05,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 18:02:05,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (1/1) ... [2023-08-28 18:02:05,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:02:05,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:02:05,342 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 18:02:05,362 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 18:02:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 18:02:05,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 18:02:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 18:02:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 18:02:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 18:02:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 18:02:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 18:02:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 18:02:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 18:02:05,380 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 18:02:05,507 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 18:02:05,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 18:02:05,661 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 18:02:05,755 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 18:02:05,758 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-28 18:02:05,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:02:05 BoogieIcfgContainer [2023-08-28 18:02:05,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 18:02:05,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 18:02:05,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 18:02:05,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 18:02:05,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:02:04" (1/3) ... [2023-08-28 18:02:05,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137ab975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:02:05, skipping insertion in model container [2023-08-28 18:02:05,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:02:05" (2/3) ... [2023-08-28 18:02:05,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137ab975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:02:05, skipping insertion in model container [2023-08-28 18:02:05,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:02:05" (3/3) ... [2023-08-28 18:02:05,785 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2023-08-28 18:02:05,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 18:02:05,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 18:02:05,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-28 18:02:05,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 18:02:05,838 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:05,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:05,896 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-28 18:02:05,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:05,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-28 18:02:05,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:05,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:05,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:05,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:05,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:05,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:05,933 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-28 18:02:05,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:05,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-28 18:02:05,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 832 [2023-08-28 18:02:07,771 INFO L134 LiptonReduction]: Checked pairs total: 720 [2023-08-28 18:02:07,771 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-28 18:02:07,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:07,795 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:07,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-28 18:02:07,805 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:07,805 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:07,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:07,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:07,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-08-28 18:02:07,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 9987784, now seen corresponding path program 1 times [2023-08-28 18:02:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:07,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820215798] [2023-08-28 18:02:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:07,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:07,954 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 18:02:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:07,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820215798] [2023-08-28 18:02:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820215798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:07,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:07,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485665219] [2023-08-28 18:02:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:07,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:07,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 120 [2023-08-28 18:02:07,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 18:02:07,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:07,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 120 [2023-08-28 18:02:07,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:08,019 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-28 18:02:08,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:08,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-28 18:02:08,020 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-28 18:02:08,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-28 18:02:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 102 transitions. [2023-08-28 18:02:08,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2023-08-28 18:02:08,032 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 102 transitions. [2023-08-28 18:02:08,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 102 transitions. [2023-08-28 18:02:08,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:08,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 102 transitions. [2023-08-28 18:02:08,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:02:08,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 18:02:08,041 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 18:02:08,042 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 2 states and 102 transitions. [2023-08-28 18:02:08,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-28 18:02:08,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:08,045 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-28 18:02:08,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-28 18:02:08,049 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2023-08-28 18:02:08,050 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-28 18:02:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 18:02:08,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2023-08-28 18:02:08,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-08-28 18:02:08,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-08-28 18:02:08,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-08-28 18:02:08,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-08-28 18:02:08,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-08-28 18:02:08,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-08-28 18:02:08,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-08-28 18:02:08,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 18:02:08,055 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:08,057 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:08,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:08,070 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-28 18:02:08,070 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:08,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-28 18:02:08,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:08,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:08,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:08,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:08,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:08,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 119 flow [2023-08-28 18:02:08,080 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-28 18:02:08,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:08,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-28 18:02:08,082 INFO L119 LiptonReduction]: Number of co-enabled transitions 832 [2023-08-28 18:02:09,670 INFO L134 LiptonReduction]: Checked pairs total: 762 [2023-08-28 18:02:09,671 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-28 18:02:09,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:09,674 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:09,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:09,677 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-08-28 18:02:09,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:09,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:09,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 18:02:09,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:09,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1277951180, now seen corresponding path program 1 times [2023-08-28 18:02:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141880781] [2023-08-28 18:02:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:09,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:09,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:09,727 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:09,727 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 18:02:09,728 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:09,728 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:09,729 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:09,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 18:02:09,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:09,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:09,768 INFO L130 PetriNetUnfolder]: 11/112 cut-off events. [2023-08-28 18:02:09,768 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:02:09,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 11/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-28 18:02:09,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:09,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:09,770 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:09,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:09,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:09,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:09,784 INFO L130 PetriNetUnfolder]: 11/112 cut-off events. [2023-08-28 18:02:09,784 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:02:09,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 11/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-28 18:02:09,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 3776 [2023-08-28 18:02:11,656 INFO L134 LiptonReduction]: Checked pairs total: 3290 [2023-08-28 18:02:11,656 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-28 18:02:11,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:11,659 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:11,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-28 18:02:11,661 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:11,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:11,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:11,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:11,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-28 18:02:11,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:11,662 INFO L85 PathProgramCache]: Analyzing trace with hash 18383355, now seen corresponding path program 1 times [2023-08-28 18:02:11,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:11,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846361681] [2023-08-28 18:02:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:11,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:02:11,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846361681] [2023-08-28 18:02:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846361681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214215554] [2023-08-28 18:02:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:11,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 184 [2023-08-28 18:02:11,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:02:11,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:11,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 184 [2023-08-28 18:02:11,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:11,711 INFO L130 PetriNetUnfolder]: 20/57 cut-off events. [2023-08-28 18:02:11,711 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-28 18:02:11,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 57 events. 20/57 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 20 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 28. Up to 47 conditions per place. [2023-08-28 18:02:11,712 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-28 18:02:11,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 50 flow [2023-08-28 18:02:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 157 transitions. [2023-08-28 18:02:11,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266304347826087 [2023-08-28 18:02:11,714 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 157 transitions. [2023-08-28 18:02:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 157 transitions. [2023-08-28 18:02:11,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:11,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 157 transitions. [2023-08-28 18:02:11,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 18:02:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 18:02:11,717 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 18:02:11,717 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 2 states and 157 transitions. [2023-08-28 18:02:11,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 50 flow [2023-08-28 18:02:11,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:11,718 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-28 18:02:11,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-28 18:02:11,719 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -8 predicate places. [2023-08-28 18:02:11,719 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-28 18:02:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 18:02:11,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2023-08-28 18:02:11,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-28 18:02:11,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-28 18:02:11,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-08-28 18:02:11,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-28 18:02:11,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-28 18:02:11,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-28 18:02:11,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-28 18:02:11,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-28 18:02:11,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-28 18:02:11,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-28 18:02:11,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-28 18:02:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 18:02:11,722 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:11,723 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:11,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:11,735 INFO L130 PetriNetUnfolder]: 11/112 cut-off events. [2023-08-28 18:02:11,736 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:02:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 11/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-28 18:02:11,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:11,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:11,738 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:11,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:11,738 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:11,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-28 18:02:11,749 INFO L130 PetriNetUnfolder]: 11/112 cut-off events. [2023-08-28 18:02:11,749 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:02:11,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 11/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-28 18:02:11,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 3776 [2023-08-28 18:02:13,665 INFO L134 LiptonReduction]: Checked pairs total: 3708 [2023-08-28 18:02:13,666 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-28 18:02:13,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:13,668 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:13,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:13,671 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2023-08-28 18:02:13,672 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:02:13,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:13,672 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-28 18:02:13,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:13,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1316296974, now seen corresponding path program 1 times [2023-08-28 18:02:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848423352] [2023-08-28 18:02:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:13,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:13,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:13,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:13,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 18:02:13,704 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:13,705 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:13,705 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:13,705 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-28 18:02:13,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:13,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:13,747 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-28 18:02:13,747 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:02:13,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 157 events. 16/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-08-28 18:02:13,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:13,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:13,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:13,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:13,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:13,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:13,773 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-28 18:02:13,773 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:02:13,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 157 events. 16/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-08-28 18:02:13,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 8832 [2023-08-28 18:02:16,481 INFO L134 LiptonReduction]: Checked pairs total: 8948 [2023-08-28 18:02:16,481 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-28 18:02:16,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:16,484 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:16,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-28 18:02:16,485 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:16,485 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:16,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:16,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:16,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-28 18:02:16,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:16,486 INFO L85 PathProgramCache]: Analyzing trace with hash 30192628, now seen corresponding path program 1 times [2023-08-28 18:02:16,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:16,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172200750] [2023-08-28 18:02:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:02:16,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:16,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172200750] [2023-08-28 18:02:16,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172200750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:16,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:16,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:16,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814969686] [2023-08-28 18:02:16,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:16,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:16,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:16,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:16,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 259 [2023-08-28 18:02:16,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 18:02:16,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:16,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 259 [2023-08-28 18:02:16,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:16,558 INFO L130 PetriNetUnfolder]: 110/225 cut-off events. [2023-08-28 18:02:16,558 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-28 18:02:16,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 225 events. 110/225 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 895 event pairs, 110 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 127. Up to 191 conditions per place. [2023-08-28 18:02:16,559 INFO L137 encePairwiseOnDemand]: 246/259 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-28 18:02:16,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 71 flow [2023-08-28 18:02:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 212 transitions. [2023-08-28 18:02:16,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092664092664093 [2023-08-28 18:02:16,562 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 212 transitions. [2023-08-28 18:02:16,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 212 transitions. [2023-08-28 18:02:16,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:16,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 212 transitions. [2023-08-28 18:02:16,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 18:02:16,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 18:02:16,565 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 18:02:16,566 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 75 flow. Second operand 2 states and 212 transitions. [2023-08-28 18:02:16,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 71 flow [2023-08-28 18:02:16,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 65 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:16,567 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-08-28 18:02:16,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-08-28 18:02:16,568 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -12 predicate places. [2023-08-28 18:02:16,568 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-08-28 18:02:16,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 18:02:16,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-28 18:02:16,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-28 18:02:16,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-28 18:02:16,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-28 18:02:16,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-28 18:02:16,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-28 18:02:16,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-28 18:02:16,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-28 18:02:16,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-28 18:02:16,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-28 18:02:16,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-28 18:02:16,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-28 18:02:16,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-28 18:02:16,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-28 18:02:16,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-28 18:02:16,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-28 18:02:16,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 18:02:16,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:16,573 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:16,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:16,590 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-28 18:02:16,590 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:02:16,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 157 events. 16/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-08-28 18:02:16,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:16,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:16,593 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:16,593 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:16,594 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:16,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 267 flow [2023-08-28 18:02:16,609 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-28 18:02:16,609 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:02:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 157 events. 16/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-08-28 18:02:16,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 8832 [2023-08-28 18:02:19,205 INFO L134 LiptonReduction]: Checked pairs total: 8912 [2023-08-28 18:02:19,205 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-28 18:02:19,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:19,207 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:19,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:19,211 INFO L130 PetriNetUnfolder]: 0/36 cut-off events. [2023-08-28 18:02:19,211 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:02:19,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:19,212 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-28 18:02:19,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:19,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash 267129566, now seen corresponding path program 1 times [2023-08-28 18:02:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507291650] [2023-08-28 18:02:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:19,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:19,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:19,247 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:19,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 18:02:19,247 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:19,248 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:19,248 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:19,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-28 18:02:19,266 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:19,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:19,296 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2023-08-28 18:02:19,296 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:02:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2023-08-28 18:02:19,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:19,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:19,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:19,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:19,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:19,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:19,322 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2023-08-28 18:02:19,322 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:02:19,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2023-08-28 18:02:19,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 16000 [2023-08-28 18:02:22,709 INFO L134 LiptonReduction]: Checked pairs total: 16849 [2023-08-28 18:02:22,709 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-28 18:02:22,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:22,711 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:22,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-28 18:02:22,712 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:22,713 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:22,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:22,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:22,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-28 18:02:22,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:22,714 INFO L85 PathProgramCache]: Analyzing trace with hash 45324834, now seen corresponding path program 1 times [2023-08-28 18:02:22,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:22,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979953893] [2023-08-28 18:02:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:02:22,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:22,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979953893] [2023-08-28 18:02:22,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979953893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:22,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:22,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:22,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571648176] [2023-08-28 18:02:22,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:22,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:22,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:22,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 338 [2023-08-28 18:02:22,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:02:22,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:22,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 338 [2023-08-28 18:02:22,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:22,849 INFO L130 PetriNetUnfolder]: 488/837 cut-off events. [2023-08-28 18:02:22,849 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2023-08-28 18:02:22,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 837 events. 488/837 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3914 event pairs, 488 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 511. Up to 731 conditions per place. [2023-08-28 18:02:22,851 INFO L137 encePairwiseOnDemand]: 321/338 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-28 18:02:22,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 94 flow [2023-08-28 18:02:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2023-08-28 18:02:22,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39497041420118345 [2023-08-28 18:02:22,857 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2023-08-28 18:02:22,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2023-08-28 18:02:22,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:22,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2023-08-28 18:02:22,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:02:22,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states 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 18:02:22,863 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states 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 18:02:22,863 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 100 flow. Second operand 2 states and 267 transitions. [2023-08-28 18:02:22,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 94 flow [2023-08-28 18:02:22,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 82 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:22,868 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-28 18:02:22,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-28 18:02:22,870 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -16 predicate places. [2023-08-28 18:02:22,871 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-28 18:02:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:02:22,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 20 remaining) [2023-08-28 18:02:22,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-28 18:02:22,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-28 18:02:22,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-28 18:02:22,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-28 18:02:22,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-28 18:02:22,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-28 18:02:22,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-28 18:02:22,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-28 18:02:22,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-28 18:02:22,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-28 18:02:22,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-28 18:02:22,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-28 18:02:22,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-28 18:02:22,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-28 18:02:22,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-28 18:02:22,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-28 18:02:22,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-28 18:02:22,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-28 18:02:22,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-28 18:02:22,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 18:02:22,885 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:22,886 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:22,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:22,911 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2023-08-28 18:02:22,911 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:02:22,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2023-08-28 18:02:22,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:22,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:22,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:22,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:22,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:22,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 344 flow [2023-08-28 18:02:22,936 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2023-08-28 18:02:22,936 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:02:22,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2023-08-28 18:02:22,946 INFO L119 LiptonReduction]: Number of co-enabled transitions 16000 [2023-08-28 18:02:26,064 INFO L134 LiptonReduction]: Checked pairs total: 16939 [2023-08-28 18:02:26,064 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-28 18:02:26,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:26,066 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:26,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:26,071 INFO L130 PetriNetUnfolder]: 0/47 cut-off events. [2023-08-28 18:02:26,071 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:02:26,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:26,071 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-28 18:02:26,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:26,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -925071375, now seen corresponding path program 1 times [2023-08-28 18:02:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:26,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622636703] [2023-08-28 18:02:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:26,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:26,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:26,103 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:26,103 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:26,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 18:02:26,103 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:26,104 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:26,104 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:26,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-28 18:02:26,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:26,154 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-28 18:02:26,155 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:02:26,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 247 events. 26/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2023-08-28 18:02:26,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:26,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:26,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:26,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:26,162 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:26,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:26,189 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-28 18:02:26,189 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:02:26,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 247 events. 26/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2023-08-28 18:02:26,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 25280 [2023-08-28 18:02:30,273 INFO L134 LiptonReduction]: Checked pairs total: 26041 [2023-08-28 18:02:30,273 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-28 18:02:30,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:30,275 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:30,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-28 18:02:30,276 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:30,276 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:30,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:30,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:30,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 18:02:30,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash 64165673, now seen corresponding path program 1 times [2023-08-28 18:02:30,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:30,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041864956] [2023-08-28 18:02:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:30,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:30,291 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 18:02:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041864956] [2023-08-28 18:02:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041864956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:30,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752621185] [2023-08-28 18:02:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:30,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:30,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:30,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:30,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 402 [2023-08-28 18:02:30,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 18:02:30,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:30,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 402 [2023-08-28 18:02:30,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:30,642 INFO L130 PetriNetUnfolder]: 1946/2997 cut-off events. [2023-08-28 18:02:30,642 INFO L131 PetriNetUnfolder]: For 2176/2176 co-relation queries the response was YES. [2023-08-28 18:02:30,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 2997 events. 1946/2997 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15411 event pairs, 1946 based on Foata normal form. 0/2876 useless extension candidates. Maximal degree in co-relation 1924. Up to 2675 conditions per place. [2023-08-28 18:02:30,651 INFO L137 encePairwiseOnDemand]: 381/402 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-28 18:02:30,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 119 flow [2023-08-28 18:02:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2023-08-28 18:02:30,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40049751243781095 [2023-08-28 18:02:30,653 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2023-08-28 18:02:30,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2023-08-28 18:02:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:30,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2023-08-28 18:02:30,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 18:02:30,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 18:02:30,657 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 18:02:30,657 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 127 flow. Second operand 2 states and 322 transitions. [2023-08-28 18:02:30,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 119 flow [2023-08-28 18:02:30,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 99 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:30,662 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-28 18:02:30,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-28 18:02:30,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -20 predicate places. [2023-08-28 18:02:30,664 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-28 18:02:30,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-28 18:02:30,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-28 18:02:30,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-28 18:02:30,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-28 18:02:30,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 18:02:30,667 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:30,668 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:30,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:30,695 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-28 18:02:30,695 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:02:30,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 247 events. 26/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2023-08-28 18:02:30,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:30,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:30,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:30,700 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:30,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:30,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 189 transitions, 423 flow [2023-08-28 18:02:30,724 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-28 18:02:30,724 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:02:30,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 247 events. 26/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2023-08-28 18:02:30,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 25280 [2023-08-28 18:02:34,880 INFO L134 LiptonReduction]: Checked pairs total: 25936 [2023-08-28 18:02:34,880 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-28 18:02:34,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:34,882 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:34,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:34,886 INFO L130 PetriNetUnfolder]: 0/58 cut-off events. [2023-08-28 18:02:34,887 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:02:34,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:34,887 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:02:34,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:34,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 55042852, now seen corresponding path program 1 times [2023-08-28 18:02:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701527134] [2023-08-28 18:02:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:34,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:34,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:34,919 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:34,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:34,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 18:02:34,919 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:34,920 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:34,920 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:34,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-28 18:02:34,944 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:34,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:34,978 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2023-08-28 18:02:34,979 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:02:34,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 292 events. 31/292 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 859 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 269. Up to 14 conditions per place. [2023-08-28 18:02:34,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:34,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:34,986 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:34,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:34,986 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:34,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:35,017 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2023-08-28 18:02:35,017 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:02:35,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 292 events. 31/292 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 859 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 269. Up to 14 conditions per place. [2023-08-28 18:02:35,031 INFO L119 LiptonReduction]: Number of co-enabled transitions 36672 [2023-08-28 18:02:39,236 INFO L134 LiptonReduction]: Checked pairs total: 36208 [2023-08-28 18:02:39,237 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-28 18:02:39,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:39,238 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:39,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-28 18:02:39,239 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:39,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:39,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:39,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:39,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 18:02:39,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 85924080, now seen corresponding path program 1 times [2023-08-28 18:02:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443346162] [2023-08-28 18:02:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:39,269 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 18:02:39,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443346162] [2023-08-28 18:02:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443346162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:39,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:39,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729499338] [2023-08-28 18:02:39,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:39,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:39,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 469 [2023-08-28 18:02:39,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 18:02:39,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:39,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 469 [2023-08-28 18:02:39,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:40,435 INFO L130 PetriNetUnfolder]: 7292/10449 cut-off events. [2023-08-28 18:02:40,436 INFO L131 PetriNetUnfolder]: For 9628/9628 co-relation queries the response was YES. [2023-08-28 18:02:40,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 10449 events. 7292/10449 cut-off events. For 9628/9628 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57362 event pairs, 7292 based on Foata normal form. 0/10085 useless extension candidates. Maximal degree in co-relation 6946. Up to 9479 conditions per place. [2023-08-28 18:02:40,473 INFO L137 encePairwiseOnDemand]: 444/469 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-28 18:02:40,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 146 flow [2023-08-28 18:02:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-08-28 18:02:40,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40191897654584224 [2023-08-28 18:02:40,476 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-08-28 18:02:40,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-08-28 18:02:40,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:40,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-08-28 18:02:40,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 18:02:40,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 469.0) internal successors, (1407), 3 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states 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 18:02:40,481 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 469.0) internal successors, (1407), 3 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states 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 18:02:40,481 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 156 flow. Second operand 2 states and 377 transitions. [2023-08-28 18:02:40,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 146 flow [2023-08-28 18:02:40,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 116 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:40,492 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-28 18:02:40,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-28 18:02:40,494 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -24 predicate places. [2023-08-28 18:02:40,494 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-28 18:02:40,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 18:02:40,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 28 remaining) [2023-08-28 18:02:40,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 28 remaining) [2023-08-28 18:02:40,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 28 remaining) [2023-08-28 18:02:40,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 28 remaining) [2023-08-28 18:02:40,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2023-08-28 18:02:40,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2023-08-28 18:02:40,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 28 remaining) [2023-08-28 18:02:40,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 28 remaining) [2023-08-28 18:02:40,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2023-08-28 18:02:40,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 28 remaining) [2023-08-28 18:02:40,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2023-08-28 18:02:40,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2023-08-28 18:02:40,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2023-08-28 18:02:40,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2023-08-28 18:02:40,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 28 remaining) [2023-08-28 18:02:40,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 18:02:40,499 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:40,501 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:40,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:40,542 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2023-08-28 18:02:40,542 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:02:40,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 292 events. 31/292 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 859 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 269. Up to 14 conditions per place. [2023-08-28 18:02:40,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:40,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:40,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:40,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:40,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:40,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 504 flow [2023-08-28 18:02:40,585 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2023-08-28 18:02:40,585 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:02:40,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 292 events. 31/292 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 859 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 269. Up to 14 conditions per place. [2023-08-28 18:02:40,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 36672 [2023-08-28 18:02:44,754 INFO L134 LiptonReduction]: Checked pairs total: 37794 [2023-08-28 18:02:44,754 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-28 18:02:44,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:44,756 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:44,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:44,761 INFO L130 PetriNetUnfolder]: 0/69 cut-off events. [2023-08-28 18:02:44,761 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:02:44,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:44,762 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:02:44,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:44,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash -989264773, now seen corresponding path program 1 times [2023-08-28 18:02:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581971706] [2023-08-28 18:02:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:44,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:44,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:44,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:44,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:44,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 18:02:44,793 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:44,794 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:44,794 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:44,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-28 18:02:44,819 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:44,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:44,861 INFO L130 PetriNetUnfolder]: 36/337 cut-off events. [2023-08-28 18:02:44,862 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:02:44,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 337 events. 36/337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1040 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 323. Up to 16 conditions per place. [2023-08-28 18:02:44,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:44,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:44,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:44,872 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:44,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:44,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:44,929 INFO L130 PetriNetUnfolder]: 36/337 cut-off events. [2023-08-28 18:02:44,929 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:02:44,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 337 events. 36/337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1040 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 323. Up to 16 conditions per place. [2023-08-28 18:02:44,946 INFO L119 LiptonReduction]: Number of co-enabled transitions 50176 [2023-08-28 18:02:50,078 INFO L134 LiptonReduction]: Checked pairs total: 50677 [2023-08-28 18:02:50,079 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-08-28 18:02:50,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:02:50,081 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:50,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-28 18:02:50,082 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:02:50,082 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:02:50,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:50,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:02:50,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-28 18:02:50,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 111242805, now seen corresponding path program 1 times [2023-08-28 18:02:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221151540] [2023-08-28 18:02:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:50,094 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 18:02:50,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:50,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221151540] [2023-08-28 18:02:50,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221151540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:02:50,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:02:50,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:02:50,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135325598] [2023-08-28 18:02:50,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:02:50,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:02:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:02:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:02:50,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 546 [2023-08-28 18:02:50,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 18:02:50,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:50,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 546 [2023-08-28 18:02:50,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:02:53,348 INFO L130 PetriNetUnfolder]: 26246/35721 cut-off events. [2023-08-28 18:02:53,348 INFO L131 PetriNetUnfolder]: For 40003/40003 co-relation queries the response was YES. [2023-08-28 18:02:53,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81840 conditions, 35721 events. 26246/35721 cut-off events. For 40003/40003 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 205637 event pairs, 26246 based on Foata normal form. 0/34628 useless extension candidates. Maximal degree in co-relation 24361. Up to 32807 conditions per place. [2023-08-28 18:02:53,490 INFO L137 encePairwiseOnDemand]: 517/546 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-28 18:02:53,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 175 flow [2023-08-28 18:02:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:02:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:02:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2023-08-28 18:02:53,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2023-08-28 18:02:53,493 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2023-08-28 18:02:53,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2023-08-28 18:02:53,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:02:53,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2023-08-28 18:02:53,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 18:02:53,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 546.0) internal successors, (1638), 3 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 18:02:53,498 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 546.0) internal successors, (1638), 3 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 18:02:53,498 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 187 flow. Second operand 2 states and 432 transitions. [2023-08-28 18:02:53,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 175 flow [2023-08-28 18:02:53,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 133 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-28 18:02:53,575 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-28 18:02:53,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-28 18:02:53,576 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -28 predicate places. [2023-08-28 18:02:53,576 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-28 18:02:53,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 18:02:53,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 32 remaining) [2023-08-28 18:02:53,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2023-08-28 18:02:53,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2023-08-28 18:02:53,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2023-08-28 18:02:53,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2023-08-28 18:02:53,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 18:02:53,580 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:53,581 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:02:53,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:53,627 INFO L130 PetriNetUnfolder]: 36/337 cut-off events. [2023-08-28 18:02:53,627 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:02:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 337 events. 36/337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1040 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 323. Up to 16 conditions per place. [2023-08-28 18:02:53,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:53,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:53,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:53,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:53,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:53,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 587 flow [2023-08-28 18:02:53,676 INFO L130 PetriNetUnfolder]: 36/337 cut-off events. [2023-08-28 18:02:53,676 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:02:53,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 337 events. 36/337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1040 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 323. Up to 16 conditions per place. [2023-08-28 18:02:53,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 50176 [2023-08-28 18:02:58,921 INFO L134 LiptonReduction]: Checked pairs total: 50973 [2023-08-28 18:02:58,922 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-08-28 18:02:58,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:02:58,924 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:02:58,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:02:58,930 INFO L130 PetriNetUnfolder]: 0/80 cut-off events. [2023-08-28 18:02:58,931 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:02:58,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:58,931 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:02:58,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:02:58,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1822931136, now seen corresponding path program 1 times [2023-08-28 18:02:58,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:58,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775640747] [2023-08-28 18:02:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:58,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:58,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:02:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:02:58,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:02:58,963 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:02:58,963 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:02:58,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 18:02:58,963 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:02:58,964 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:02:58,964 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:02:58,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-28 18:02:58,994 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:02:58,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 288 transitions, 672 flow [2023-08-28 18:02:59,101 INFO L130 PetriNetUnfolder]: 41/382 cut-off events. [2023-08-28 18:02:59,103 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:02:59,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 382 events. 41/382 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 378. Up to 18 conditions per place. [2023-08-28 18:02:59,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 288 transitions, 672 flow [2023-08-28 18:02:59,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 288 transitions, 672 flow [2023-08-28 18:02:59,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:02:59,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 288 transitions, 672 flow [2023-08-28 18:02:59,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 288 transitions, 672 flow [2023-08-28 18:02:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 288 transitions, 672 flow [2023-08-28 18:02:59,165 INFO L130 PetriNetUnfolder]: 41/382 cut-off events. [2023-08-28 18:02:59,166 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:02:59,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 382 events. 41/382 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 378. Up to 18 conditions per place. [2023-08-28 18:02:59,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 65792 [2023-08-28 18:03:04,989 INFO L134 LiptonReduction]: Checked pairs total: 67470 [2023-08-28 18:03:04,989 INFO L136 LiptonReduction]: Total number of compositions: 329 [2023-08-28 18:03:04,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:03:04,991 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:04,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-28 18:03:04,993 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:03:04,993 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:04,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:04,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:03:04,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-28 18:03:04,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash 140051863, now seen corresponding path program 1 times [2023-08-28 18:03:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:04,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105224407] [2023-08-28 18:03:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:05,014 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 18:03:05,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:05,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105224407] [2023-08-28 18:03:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105224407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:05,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:05,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:03:05,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655245941] [2023-08-28 18:03:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:05,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:03:05,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:03:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:03:05,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 617 [2023-08-28 18:03:05,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 220 flow. Second operand has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 18:03:05,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:05,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 617 [2023-08-28 18:03:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:15,757 INFO L130 PetriNetUnfolder]: 91856/120285 cut-off events. [2023-08-28 18:03:15,757 INFO L131 PetriNetUnfolder]: For 158830/158830 co-relation queries the response was YES. [2023-08-28 18:03:16,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277213 conditions, 120285 events. 91856/120285 cut-off events. For 158830/158830 co-relation queries the response was YES. Maximal size of possible extension queue 4108. Compared 716299 event pairs, 91856 based on Foata normal form. 0/117005 useless extension candidates. Maximal degree in co-relation 83653. Up to 111539 conditions per place. [2023-08-28 18:03:16,176 INFO L137 encePairwiseOnDemand]: 584/617 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-28 18:03:16,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 206 flow [2023-08-28 18:03:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:03:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:03:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 487 transitions. [2023-08-28 18:03:16,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946515397082658 [2023-08-28 18:03:16,179 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 487 transitions. [2023-08-28 18:03:16,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 487 transitions. [2023-08-28 18:03:16,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:16,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 487 transitions. [2023-08-28 18:03:16,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 18:03:16,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 617.0) internal successors, (1851), 3 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:03:16,400 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 617.0) internal successors, (1851), 3 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:03:16,400 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 220 flow. Second operand 2 states and 487 transitions. [2023-08-28 18:03:16,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 206 flow [2023-08-28 18:03:16,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 150 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-28 18:03:16,573 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-28 18:03:16,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-28 18:03:16,573 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -32 predicate places. [2023-08-28 18:03:16,573 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-28 18:03:16,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 18:03:16,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 36 remaining) [2023-08-28 18:03:16,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-28 18:03:16,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-28 18:03:16,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-28 18:03:16,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-08-28 18:03:16,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-28 18:03:16,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-28 18:03:16,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-28 18:03:16,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-28 18:03:16,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-28 18:03:16,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-28 18:03:16,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-28 18:03:16,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-28 18:03:16,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-08-28 18:03:16,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-08-28 18:03:16,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-28 18:03:16,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-08-28 18:03:16,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-08-28 18:03:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 18:03:16,580 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:03:16,580 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:03:16,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 288 transitions, 672 flow [2023-08-28 18:03:16,628 INFO L130 PetriNetUnfolder]: 41/382 cut-off events. [2023-08-28 18:03:16,628 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:03:16,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 382 events. 41/382 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 378. Up to 18 conditions per place. [2023-08-28 18:03:16,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 288 transitions, 672 flow [2023-08-28 18:03:16,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 288 transitions, 672 flow [2023-08-28 18:03:16,638 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:16,638 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 288 transitions, 672 flow [2023-08-28 18:03:16,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 288 transitions, 672 flow [2023-08-28 18:03:16,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 288 transitions, 672 flow [2023-08-28 18:03:16,677 INFO L130 PetriNetUnfolder]: 41/382 cut-off events. [2023-08-28 18:03:16,678 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:03:16,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 382 events. 41/382 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 378. Up to 18 conditions per place. [2023-08-28 18:03:16,695 INFO L119 LiptonReduction]: Number of co-enabled transitions 65792 [2023-08-28 18:03:22,509 INFO L134 LiptonReduction]: Checked pairs total: 67387 [2023-08-28 18:03:22,509 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-28 18:03:22,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:03:22,511 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:22,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:03:22,520 INFO L130 PetriNetUnfolder]: 0/91 cut-off events. [2023-08-28 18:03:22,520 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:03:22,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:22,521 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:22,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:03:22,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:22,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1499090212, now seen corresponding path program 1 times [2023-08-28 18:03:22,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:22,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486749149] [2023-08-28 18:03:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:03:22,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:03:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:03:22,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:03:22,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:03:22,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:03:22,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-28 18:03:22,553 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:03:22,554 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:03:22,554 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:03:22,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-28 18:03:22,588 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:03:22,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 759 flow [2023-08-28 18:03:22,664 INFO L130 PetriNetUnfolder]: 46/427 cut-off events. [2023-08-28 18:03:22,664 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:03:22,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 427 events. 46/427 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1371 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 434. Up to 20 conditions per place. [2023-08-28 18:03:22,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 759 flow [2023-08-28 18:03:22,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 321 transitions, 759 flow [2023-08-28 18:03:22,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:03:22,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 321 transitions, 759 flow [2023-08-28 18:03:22,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 321 transitions, 759 flow [2023-08-28 18:03:22,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 759 flow [2023-08-28 18:03:22,755 INFO L130 PetriNetUnfolder]: 46/427 cut-off events. [2023-08-28 18:03:22,755 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:03:22,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 427 events. 46/427 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1371 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 434. Up to 20 conditions per place. [2023-08-28 18:03:22,789 INFO L119 LiptonReduction]: Number of co-enabled transitions 83520 [2023-08-28 18:03:29,712 INFO L134 LiptonReduction]: Checked pairs total: 87100 [2023-08-28 18:03:29,712 INFO L136 LiptonReduction]: Total number of compositions: 367 [2023-08-28 18:03:29,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:03:29,714 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:03:29,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-28 18:03:29,715 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 18:03:29,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:03:29,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:29,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:03:29,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-28 18:03:29,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash 172276657, now seen corresponding path program 1 times [2023-08-28 18:03:29,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:29,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988134423] [2023-08-28 18:03:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:29,733 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 18:03:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988134423] [2023-08-28 18:03:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988134423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:03:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:03:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:03:29,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305181708] [2023-08-28 18:03:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:03:29,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:03:29,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:29,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:03:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:03:29,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 688 [2023-08-28 18:03:29,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 255 flow. Second operand has 2 states, 2 states have (on average 240.0) internal successors, (480), 2 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 18:03:29,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:03:29,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 688 [2023-08-28 18:03:29,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:07,719 INFO L130 PetriNetUnfolder]: 314930/400221 cut-off events. [2023-08-28 18:04:07,719 INFO L131 PetriNetUnfolder]: For 609352/609352 co-relation queries the response was YES. [2023-08-28 18:04:09,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926753 conditions, 400221 events. 314930/400221 cut-off events. For 609352/609352 co-relation queries the response was YES. Maximal size of possible extension queue 11911. Compared 2456524 event pairs, 314930 based on Foata normal form. 0/390380 useless extension candidates. Maximal degree in co-relation 282670. Up to 373979 conditions per place. [2023-08-28 18:04:09,264 INFO L137 encePairwiseOnDemand]: 651/688 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-28 18:04:09,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 239 flow [2023-08-28 18:04:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2023-08-28 18:04:09,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3938953488372093 [2023-08-28 18:04:09,267 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2023-08-28 18:04:09,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2023-08-28 18:04:09,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:09,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2023-08-28 18:04:09,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 18:04:09,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 688.0) internal successors, (2064), 3 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 18:04:09,273 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 688.0) internal successors, (2064), 3 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 18:04:09,273 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 255 flow. Second operand 2 states and 542 transitions. [2023-08-28 18:04:09,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 239 flow [2023-08-28 18:04:09,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 32 transitions, 167 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:09,889 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-28 18:04:09,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-28 18:04:09,890 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -36 predicate places. [2023-08-28 18:04:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-28 18:04:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 240.0) internal successors, (480), 2 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (39 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2023-08-28 18:04:09,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2023-08-28 18:04:09,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2023-08-28 18:04:09,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2023-08-28 18:04:09,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2023-08-28 18:04:09,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 40 remaining) [2023-08-28 18:04:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-28 18:04:09,894 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:09,895 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:09,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 759 flow [2023-08-28 18:04:10,168 INFO L130 PetriNetUnfolder]: 46/427 cut-off events. [2023-08-28 18:04:10,168 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:04:10,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 427 events. 46/427 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1371 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 434. Up to 20 conditions per place. [2023-08-28 18:04:10,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 759 flow [2023-08-28 18:04:10,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 321 transitions, 759 flow [2023-08-28 18:04:10,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:10,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 321 transitions, 759 flow [2023-08-28 18:04:10,178 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 321 transitions, 759 flow [2023-08-28 18:04:10,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 759 flow [2023-08-28 18:04:10,255 INFO L130 PetriNetUnfolder]: 46/427 cut-off events. [2023-08-28 18:04:10,256 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:04:10,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 427 events. 46/427 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1371 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 434. Up to 20 conditions per place. [2023-08-28 18:04:10,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 83520 [2023-08-28 18:04:16,994 INFO L134 LiptonReduction]: Checked pairs total: 87267 [2023-08-28 18:04:16,994 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-08-28 18:04:16,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:04:16,997 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:16,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:04:17,004 INFO L130 PetriNetUnfolder]: 0/102 cut-off events. [2023-08-28 18:04:17,004 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:04:17,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:17,005 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:17,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:04:17,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash -663177102, now seen corresponding path program 1 times [2023-08-28 18:04:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391468070] [2023-08-28 18:04:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:17,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:17,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:17,153 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:17,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:04:17,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-28 18:04:17,154 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:17,154 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:04:17,154 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:04:17,155 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-28 18:04:17,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:17,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 354 transitions, 848 flow [2023-08-28 18:04:17,249 INFO L130 PetriNetUnfolder]: 51/472 cut-off events. [2023-08-28 18:04:17,249 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-28 18:04:17,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 472 events. 51/472 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1539 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 491. Up to 22 conditions per place. [2023-08-28 18:04:17,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 354 transitions, 848 flow [2023-08-28 18:04:17,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 354 transitions, 848 flow [2023-08-28 18:04:17,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:17,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 354 transitions, 848 flow [2023-08-28 18:04:17,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 354 transitions, 848 flow [2023-08-28 18:04:17,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 354 transitions, 848 flow [2023-08-28 18:04:17,344 INFO L130 PetriNetUnfolder]: 51/472 cut-off events. [2023-08-28 18:04:17,344 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-28 18:04:17,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 472 events. 51/472 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1539 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 491. Up to 22 conditions per place. [2023-08-28 18:04:17,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 103360 [2023-08-28 18:04:24,367 INFO L134 LiptonReduction]: Checked pairs total: 109713 [2023-08-28 18:04:24,367 INFO L136 LiptonReduction]: Total number of compositions: 407 [2023-08-28 18:04:24,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:24,369 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;@7aa4a235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:24,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-28 18:04:24,370 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:04:24,370 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:24,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:24,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:04:24,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-08-28 18:04:24,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash 207941717, now seen corresponding path program 1 times [2023-08-28 18:04:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:24,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851448779] [2023-08-28 18:04:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:24,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:24,388 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 18:04:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851448779] [2023-08-28 18:04:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851448779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754095396] [2023-08-28 18:04:24,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:24,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:24,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 761 [2023-08-28 18:04:24,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 292 flow. Second operand has 2 states, 2 states have (on average 264.0) internal successors, (528), 2 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 18:04:24,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:24,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 761 [2023-08-28 18:04:24,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand